diff --git a/wcfsetup/install/files/lib/system/api/composer.json b/wcfsetup/install/files/lib/system/api/composer.json
index 731183b6cea..0554681b257 100644
--- a/wcfsetup/install/files/lib/system/api/composer.json
+++ b/wcfsetup/install/files/lib/system/api/composer.json
@@ -15,7 +15,7 @@
         "erusev/parsedown": "^1.7.4",
         "ezyang/htmlpurifier": "^4.16",
         "guzzlehttp/guzzle": "^7.7.0",
-        "guzzlehttp/psr7": "^2.5.0",
+        "guzzlehttp/psr7": "^2.6.0",
         "laminas/laminas-diactoros": "^3.1.0",
         "laminas/laminas-httphandlerrunner": "^2.7.0",
         "laminas/laminas-progressbar": "^2.12",
diff --git a/wcfsetup/install/files/lib/system/api/composer.lock b/wcfsetup/install/files/lib/system/api/composer.lock
index 7a9f744029f..3a8385d04b3 100644
--- a/wcfsetup/install/files/lib/system/api/composer.lock
+++ b/wcfsetup/install/files/lib/system/api/composer.lock
@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "f22e1ed8363f1981362682c58a866a8a",
+    "content-hash": "d94553c231572f020140e0c1ed535635",
     "packages": [
         {
             "name": "cuyz/valinor",
@@ -379,16 +379,16 @@
         },
         {
             "name": "guzzlehttp/promises",
-            "version": "2.0.0",
+            "version": "2.0.1",
             "source": {
                 "type": "git",
                 "url": "https://github.com/guzzle/promises.git",
-                "reference": "3a494dc7dc1d7d12e511890177ae2d0e6c107da6"
+                "reference": "111166291a0f8130081195ac4556a5587d7f1b5d"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/guzzle/promises/zipball/3a494dc7dc1d7d12e511890177ae2d0e6c107da6",
-                "reference": "3a494dc7dc1d7d12e511890177ae2d0e6c107da6",
+                "url": "https://api.github.com/repos/guzzle/promises/zipball/111166291a0f8130081195ac4556a5587d7f1b5d",
+                "reference": "111166291a0f8130081195ac4556a5587d7f1b5d",
                 "shasum": ""
             },
             "require": {
@@ -442,7 +442,7 @@
             ],
             "support": {
                 "issues": "https://github.com/guzzle/promises/issues",
-                "source": "https://github.com/guzzle/promises/tree/2.0.0"
+                "source": "https://github.com/guzzle/promises/tree/2.0.1"
             },
             "funding": [
                 {
@@ -458,20 +458,20 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2023-05-21T13:50:22+00:00"
+            "time": "2023-08-03T15:11:55+00:00"
         },
         {
             "name": "guzzlehttp/psr7",
-            "version": "2.5.0",
+            "version": "2.6.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/guzzle/psr7.git",
-                "reference": "b635f279edd83fc275f822a1188157ffea568ff6"
+                "reference": "8bd7c33a0734ae1c5d074360512beb716bef3f77"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/guzzle/psr7/zipball/b635f279edd83fc275f822a1188157ffea568ff6",
-                "reference": "b635f279edd83fc275f822a1188157ffea568ff6",
+                "url": "https://api.github.com/repos/guzzle/psr7/zipball/8bd7c33a0734ae1c5d074360512beb716bef3f77",
+                "reference": "8bd7c33a0734ae1c5d074360512beb716bef3f77",
                 "shasum": ""
             },
             "require": {
@@ -558,7 +558,7 @@
             ],
             "support": {
                 "issues": "https://github.com/guzzle/psr7/issues",
-                "source": "https://github.com/guzzle/psr7/tree/2.5.0"
+                "source": "https://github.com/guzzle/psr7/tree/2.6.0"
             },
             "funding": [
                 {
@@ -574,7 +574,7 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2023-04-17T16:11:26+00:00"
+            "time": "2023-08-03T15:06:02+00:00"
         },
         {
             "name": "laminas/laminas-diactoros",
diff --git a/wcfsetup/install/files/lib/system/api/composer/installed.json b/wcfsetup/install/files/lib/system/api/composer/installed.json
index f9c86fcc624..989b93522e3 100644
--- a/wcfsetup/install/files/lib/system/api/composer/installed.json
+++ b/wcfsetup/install/files/lib/system/api/composer/installed.json
@@ -388,17 +388,17 @@
         },
         {
             "name": "guzzlehttp/promises",
-            "version": "2.0.0",
-            "version_normalized": "2.0.0.0",
+            "version": "2.0.1",
+            "version_normalized": "2.0.1.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/guzzle/promises.git",
-                "reference": "3a494dc7dc1d7d12e511890177ae2d0e6c107da6"
+                "reference": "111166291a0f8130081195ac4556a5587d7f1b5d"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/guzzle/promises/zipball/3a494dc7dc1d7d12e511890177ae2d0e6c107da6",
-                "reference": "3a494dc7dc1d7d12e511890177ae2d0e6c107da6",
+                "url": "https://api.github.com/repos/guzzle/promises/zipball/111166291a0f8130081195ac4556a5587d7f1b5d",
+                "reference": "111166291a0f8130081195ac4556a5587d7f1b5d",
                 "shasum": ""
             },
             "require": {
@@ -408,7 +408,7 @@
                 "bamarni/composer-bin-plugin": "^1.8.1",
                 "phpunit/phpunit": "^8.5.29 || ^9.5.23"
             },
-            "time": "2023-05-21T13:50:22+00:00",
+            "time": "2023-08-03T15:11:55+00:00",
             "type": "library",
             "extra": {
                 "bamarni-bin": {
@@ -454,7 +454,7 @@
             ],
             "support": {
                 "issues": "https://github.com/guzzle/promises/issues",
-                "source": "https://github.com/guzzle/promises/tree/2.0.0"
+                "source": "https://github.com/guzzle/promises/tree/2.0.1"
             },
             "funding": [
                 {
@@ -474,17 +474,17 @@
         },
         {
             "name": "guzzlehttp/psr7",
-            "version": "2.5.0",
-            "version_normalized": "2.5.0.0",
+            "version": "2.6.0",
+            "version_normalized": "2.6.0.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/guzzle/psr7.git",
-                "reference": "b635f279edd83fc275f822a1188157ffea568ff6"
+                "reference": "8bd7c33a0734ae1c5d074360512beb716bef3f77"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/guzzle/psr7/zipball/b635f279edd83fc275f822a1188157ffea568ff6",
-                "reference": "b635f279edd83fc275f822a1188157ffea568ff6",
+                "url": "https://api.github.com/repos/guzzle/psr7/zipball/8bd7c33a0734ae1c5d074360512beb716bef3f77",
+                "reference": "8bd7c33a0734ae1c5d074360512beb716bef3f77",
                 "shasum": ""
             },
             "require": {
@@ -505,7 +505,7 @@
             "suggest": {
                 "laminas/laminas-httphandlerrunner": "Emit PSR-7 responses"
             },
-            "time": "2023-04-17T16:11:26+00:00",
+            "time": "2023-08-03T15:06:02+00:00",
             "type": "library",
             "extra": {
                 "bamarni-bin": {
@@ -573,7 +573,7 @@
             ],
             "support": {
                 "issues": "https://github.com/guzzle/psr7/issues",
-                "source": "https://github.com/guzzle/psr7/tree/2.5.0"
+                "source": "https://github.com/guzzle/psr7/tree/2.6.0"
             },
             "funding": [
                 {
diff --git a/wcfsetup/install/files/lib/system/api/composer/installed.php b/wcfsetup/install/files/lib/system/api/composer/installed.php
index 1a018e70056..ffe1d47fd32 100644
--- a/wcfsetup/install/files/lib/system/api/composer/installed.php
+++ b/wcfsetup/install/files/lib/system/api/composer/installed.php
@@ -65,18 +65,18 @@
             'dev_requirement' => false,
         ),
         'guzzlehttp/promises' => array(
-            'pretty_version' => '2.0.0',
-            'version' => '2.0.0.0',
-            'reference' => '3a494dc7dc1d7d12e511890177ae2d0e6c107da6',
+            'pretty_version' => '2.0.1',
+            'version' => '2.0.1.0',
+            'reference' => '111166291a0f8130081195ac4556a5587d7f1b5d',
             'type' => 'library',
             'install_path' => __DIR__ . '/../guzzlehttp/promises',
             'aliases' => array(),
             'dev_requirement' => false,
         ),
         'guzzlehttp/psr7' => array(
-            'pretty_version' => '2.5.0',
-            'version' => '2.5.0.0',
-            'reference' => 'b635f279edd83fc275f822a1188157ffea568ff6',
+            'pretty_version' => '2.6.0',
+            'version' => '2.6.0.0',
+            'reference' => '8bd7c33a0734ae1c5d074360512beb716bef3f77',
             'type' => 'library',
             'install_path' => __DIR__ . '/../guzzlehttp/psr7',
             'aliases' => array(),
@@ -187,8 +187,8 @@
         'psr/http-factory-implementation' => array(
             'dev_requirement' => false,
             'provided' => array(
-                0 => '1.0',
-                1 => '^1.1 || ^2.0',
+                0 => '^1.1 || ^2.0',
+                1 => '1.0',
             ),
         ),
         'psr/http-message' => array(
@@ -203,8 +203,8 @@
         'psr/http-message-implementation' => array(
             'dev_requirement' => false,
             'provided' => array(
-                0 => '1.0',
-                1 => '^1.1 || ^2.0',
+                0 => '^1.1 || ^2.0',
+                1 => '1.0',
             ),
         ),
         'psr/http-server-handler' => array(
diff --git a/wcfsetup/install/files/lib/system/api/guzzlehttp/promises/CHANGELOG.md b/wcfsetup/install/files/lib/system/api/guzzlehttp/promises/CHANGELOG.md
index ab173ad7498..eaf2af426f9 100644
--- a/wcfsetup/install/files/lib/system/api/guzzlehttp/promises/CHANGELOG.md
+++ b/wcfsetup/install/files/lib/system/api/guzzlehttp/promises/CHANGELOG.md
@@ -1,7 +1,14 @@
 # CHANGELOG
 
 
-## 2.0.0 - TBC
+## 2.0.1 - 2023-08-03
+
+### Changed
+
+- PHP 8.3 support
+
+
+## 2.0.0 - 2023-05-21
 
 ### Added
 
diff --git a/wcfsetup/install/files/lib/system/api/guzzlehttp/promises/README.md b/wcfsetup/install/files/lib/system/api/guzzlehttp/promises/README.md
index 4dc7b6a1dc2..a32d3d29c79 100644
--- a/wcfsetup/install/files/lib/system/api/guzzlehttp/promises/README.md
+++ b/wcfsetup/install/files/lib/system/api/guzzlehttp/promises/README.md
@@ -41,7 +41,7 @@ composer require guzzlehttp/promises
 | Version | Status                 | PHP Version  |
 |---------|------------------------|--------------|
 | 1.x     | Bug and security fixes | >=5.5,<8.3   |
-| 2.x     | Latest                 | >=7.2.5,<8.3 |
+| 2.x     | Latest                 | >=7.2.5,<8.4 |
 
 
 ## Quick Start
diff --git a/wcfsetup/install/files/lib/system/api/guzzlehttp/promises/src/RejectionException.php b/wcfsetup/install/files/lib/system/api/guzzlehttp/promises/src/RejectionException.php
index 0db98ffb9ae..47dca862486 100644
--- a/wcfsetup/install/files/lib/system/api/guzzlehttp/promises/src/RejectionException.php
+++ b/wcfsetup/install/files/lib/system/api/guzzlehttp/promises/src/RejectionException.php
@@ -18,7 +18,7 @@ class RejectionException extends \RuntimeException
      * @param mixed       $reason      Rejection reason.
      * @param string|null $description Optional description.
      */
-    public function __construct($reason, $description = null)
+    public function __construct($reason, ?string $description = null)
     {
         $this->reason = $reason;
 
diff --git a/wcfsetup/install/files/lib/system/api/guzzlehttp/promises/vendor-bin/php-cs-fixer/composer.json b/wcfsetup/install/files/lib/system/api/guzzlehttp/promises/vendor-bin/php-cs-fixer/composer.json
deleted file mode 100644
index c9dd5ee427f..00000000000
--- a/wcfsetup/install/files/lib/system/api/guzzlehttp/promises/vendor-bin/php-cs-fixer/composer.json
+++ /dev/null
@@ -1,9 +0,0 @@
-{
-    "require": {
-        "php": "^7.4 || ^8.0",
-        "friendsofphp/php-cs-fixer": "3.16.0"
-    },
-    "config": {
-        "preferred-install": "dist"
-    }
-}
diff --git a/wcfsetup/install/files/lib/system/api/guzzlehttp/promises/vendor-bin/phpstan/composer.json b/wcfsetup/install/files/lib/system/api/guzzlehttp/promises/vendor-bin/phpstan/composer.json
deleted file mode 100644
index 711507cba8e..00000000000
--- a/wcfsetup/install/files/lib/system/api/guzzlehttp/promises/vendor-bin/phpstan/composer.json
+++ /dev/null
@@ -1,10 +0,0 @@
-{
-    "require": {
-        "php": "^7.4 || ^8.0",
-        "phpstan/phpstan": "1.10.11",
-        "phpstan/phpstan-deprecation-rules": "1.1.3"
-    },
-    "config": {
-        "preferred-install": "dist"
-    }
-}
diff --git a/wcfsetup/install/files/lib/system/api/guzzlehttp/promises/vendor-bin/psalm/composer.json b/wcfsetup/install/files/lib/system/api/guzzlehttp/promises/vendor-bin/psalm/composer.json
deleted file mode 100644
index ab96f2caf77..00000000000
--- a/wcfsetup/install/files/lib/system/api/guzzlehttp/promises/vendor-bin/psalm/composer.json
+++ /dev/null
@@ -1,9 +0,0 @@
-{
-    "require": {
-        "php": "^7.4 || ^8.0",
-        "psalm/phar": "5.9.0"
-    },
-    "config": {
-        "preferred-install": "dist"
-    }
-}
diff --git a/wcfsetup/install/files/lib/system/api/guzzlehttp/psr7/CHANGELOG.md b/wcfsetup/install/files/lib/system/api/guzzlehttp/psr7/CHANGELOG.md
index fa716c094b8..e841f67ff71 100644
--- a/wcfsetup/install/files/lib/system/api/guzzlehttp/psr7/CHANGELOG.md
+++ b/wcfsetup/install/files/lib/system/api/guzzlehttp/psr7/CHANGELOG.md
@@ -5,7 +5,22 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
-## Unreleased
+## 2.6.0 - 2023-08-03
+
+### Changed
+
+- Updated the mime type map to add some new entries, fix a couple of invalid entries, and remove an invalid entry
+- Fallback to `application/octet-stream` if we are unable to guess the content type for a multipart file upload
+
+## 2.5.1 - 2023-08-03
+
+### Fixed
+
+- Corrected mime type for `.acc` files to `audio/aac`
+
+### Changed
+
+- PHP 8.3 support
 
 ## 2.5.0 - 2023-04-17
 
diff --git a/wcfsetup/install/files/lib/system/api/guzzlehttp/psr7/README.md b/wcfsetup/install/files/lib/system/api/guzzlehttp/psr7/README.md
index 9566a7d4720..a64ec904619 100644
--- a/wcfsetup/install/files/lib/system/api/guzzlehttp/psr7/README.md
+++ b/wcfsetup/install/files/lib/system/api/guzzlehttp/psr7/README.md
@@ -8,16 +8,24 @@ functionality like query string parsing.
 ![Static analysis](https://github.com/guzzle/psr7/workflows/Static%20analysis/badge.svg)
 
 
-# Installation
+## Features
+
+This package comes with a number of stream implementations and stream
+decorators.
+
+
+## Installation
 
 ```shell
 composer require guzzlehttp/psr7
 ```
 
-# Stream implementation
+## Version Guidance
 
-This package comes with a number of stream implementations and stream
-decorators.
+| Version | Status              | PHP Version  |
+|---------|---------------------|--------------|
+| 1.x     | Security fixes only | >=5.4,<8.1   |
+| 2.x     | Latest              | >=7.2.5,<8.4 |
 
 
 ## AppendStream
@@ -855,14 +863,6 @@ This of course assumes they will be resolved against the same base URI. If this
 equivalence or difference of relative references does not mean anything.
 
 
-## Version Guidance
-
-| Version | Status         | PHP Version      |
-|---------|----------------|------------------|
-| 1.x     | Security fixes | >=5.4,<8.1       |
-| 2.x     | Latest         | ^7.2.5 \|\| ^8.0 |
-
-
 ## Security
 
 If you discover a security vulnerability within this package, please send an email to security@tidelift.com. All security vulnerabilities will be promptly addressed. Please do not disclose security-related issues publicly until a fix has been announced. Please see [Security Policy](https://github.com/guzzle/psr7/security/policy) for more information.
diff --git a/wcfsetup/install/files/lib/system/api/guzzlehttp/psr7/src/AppendStream.php b/wcfsetup/install/files/lib/system/api/guzzlehttp/psr7/src/AppendStream.php
index cbcfaee65d2..8361564b0d0 100644
--- a/wcfsetup/install/files/lib/system/api/guzzlehttp/psr7/src/AppendStream.php
+++ b/wcfsetup/install/files/lib/system/api/guzzlehttp/psr7/src/AppendStream.php
@@ -40,12 +40,14 @@ public function __toString(): string
     {
         try {
             $this->rewind();
+
             return $this->getContents();
         } catch (\Throwable $e) {
             if (\PHP_VERSION_ID >= 70400) {
                 throw $e;
             }
             trigger_error(sprintf('%s::__toString exception: %s', self::class, (string) $e), E_USER_ERROR);
+
             return '';
         }
     }
@@ -167,7 +169,7 @@ public function seek($offset, $whence = SEEK_SET): void
                 $stream->rewind();
             } catch (\Exception $e) {
                 throw new \RuntimeException('Unable to seek stream '
-                    . $i . ' of the AppendStream', 0, $e);
+                    .$i.' of the AppendStream', 0, $e);
             }
         }
 
@@ -197,7 +199,7 @@ public function read($length): string
                 if ($this->current === $total) {
                     break;
                 }
-                $this->current++;
+                ++$this->current;
             }
 
             $result = $this->streams[$this->current]->read($remaining);
diff --git a/wcfsetup/install/files/lib/system/api/guzzlehttp/psr7/src/FnStream.php b/wcfsetup/install/files/lib/system/api/guzzlehttp/psr7/src/FnStream.php
index 3a1a9512e5d..312b80ec700 100644
--- a/wcfsetup/install/files/lib/system/api/guzzlehttp/psr7/src/FnStream.php
+++ b/wcfsetup/install/files/lib/system/api/guzzlehttp/psr7/src/FnStream.php
@@ -18,7 +18,7 @@ final class FnStream implements StreamInterface
     private const SLOTS = [
         '__toString', 'close', 'detach', 'rewind',
         'getSize', 'tell', 'eof', 'isSeekable', 'seek', 'isWritable', 'write',
-        'isReadable', 'read', 'getContents', 'getMetadata'
+        'isReadable', 'read', 'getContents', 'getMetadata',
     ];
 
     /** @var array<string, callable> */
@@ -33,7 +33,7 @@ public function __construct(array $methods)
 
         // Create the functions on the class
         foreach ($methods as $name => $fn) {
-            $this->{'_fn_' . $name} = $fn;
+            $this->{'_fn_'.$name} = $fn;
         }
     }
 
@@ -45,7 +45,7 @@ public function __construct(array $methods)
     public function __get(string $name): void
     {
         throw new \BadMethodCallException(str_replace('_fn_', '', $name)
-            . '() is not implemented in the FnStream');
+            .'() is not implemented in the FnStream');
     }
 
     /**
@@ -99,6 +99,7 @@ public function __toString(): string
                 throw $e;
             }
             trigger_error(sprintf('%s::__toString exception: %s', self::class, (string) $e), E_USER_ERROR);
+
             return '';
         }
     }
diff --git a/wcfsetup/install/files/lib/system/api/guzzlehttp/psr7/src/Header.php b/wcfsetup/install/files/lib/system/api/guzzlehttp/psr7/src/Header.php
index 4d7005b2248..6e38e003128 100644
--- a/wcfsetup/install/files/lib/system/api/guzzlehttp/psr7/src/Header.php
+++ b/wcfsetup/install/files/lib/system/api/guzzlehttp/psr7/src/Header.php
@@ -89,7 +89,7 @@ public static function splitList($values): array
             $v = '';
             $isQuoted = false;
             $isEscaped = false;
-            for ($i = 0, $max = \strlen($value); $i < $max; $i++) {
+            for ($i = 0, $max = \strlen($value); $i < $max; ++$i) {
                 if ($isEscaped) {
                     $v .= $value[$i];
                     $isEscaped = false;
diff --git a/wcfsetup/install/files/lib/system/api/guzzlehttp/psr7/src/HttpFactory.php b/wcfsetup/install/files/lib/system/api/guzzlehttp/psr7/src/HttpFactory.php
index 30be222fc0b..73d17e33788 100644
--- a/wcfsetup/install/files/lib/system/api/guzzlehttp/psr7/src/HttpFactory.php
+++ b/wcfsetup/install/files/lib/system/api/guzzlehttp/psr7/src/HttpFactory.php
@@ -23,13 +23,7 @@
  * Note: in consuming code it is recommended to require the implemented interfaces
  * and inject the instance of this class multiple times.
  */
-final class HttpFactory implements
-    RequestFactoryInterface,
-    ResponseFactoryInterface,
-    ServerRequestFactoryInterface,
-    StreamFactoryInterface,
-    UploadedFileFactoryInterface,
-    UriFactoryInterface
+final class HttpFactory implements RequestFactoryInterface, ResponseFactoryInterface, ServerRequestFactoryInterface, StreamFactoryInterface, UploadedFileFactoryInterface, UriFactoryInterface
 {
     public function createUploadedFile(
         StreamInterface $stream,
diff --git a/wcfsetup/install/files/lib/system/api/guzzlehttp/psr7/src/InflateStream.php b/wcfsetup/install/files/lib/system/api/guzzlehttp/psr7/src/InflateStream.php
index 8e00f1c324d..599b55da3fe 100644
--- a/wcfsetup/install/files/lib/system/api/guzzlehttp/psr7/src/InflateStream.php
+++ b/wcfsetup/install/files/lib/system/api/guzzlehttp/psr7/src/InflateStream.php
@@ -13,9 +13,9 @@
  * then appends the zlib.inflate filter. The stream is then converted back
  * to a Guzzle stream resource to be used as a Guzzle stream.
  *
- * @link http://tools.ietf.org/html/rfc1950
- * @link http://tools.ietf.org/html/rfc1952
- * @link http://php.net/manual/en/filters.compression.php
+ * @see http://tools.ietf.org/html/rfc1950
+ * @see http://tools.ietf.org/html/rfc1952
+ * @see http://php.net/manual/en/filters.compression.php
  */
 final class InflateStream implements StreamInterface
 {
diff --git a/wcfsetup/install/files/lib/system/api/guzzlehttp/psr7/src/Message.php b/wcfsetup/install/files/lib/system/api/guzzlehttp/psr7/src/Message.php
index c1e15f8267a..9b74b8d46f7 100644
--- a/wcfsetup/install/files/lib/system/api/guzzlehttp/psr7/src/Message.php
+++ b/wcfsetup/install/files/lib/system/api/guzzlehttp/psr7/src/Message.php
@@ -18,16 +18,16 @@ final class Message
     public static function toString(MessageInterface $message): string
     {
         if ($message instanceof RequestInterface) {
-            $msg = trim($message->getMethod() . ' '
-                    . $message->getRequestTarget())
-                . ' HTTP/' . $message->getProtocolVersion();
+            $msg = trim($message->getMethod().' '
+                    .$message->getRequestTarget())
+                .' HTTP/'.$message->getProtocolVersion();
             if (!$message->hasHeader('host')) {
-                $msg .= "\r\nHost: " . $message->getUri()->getHost();
+                $msg .= "\r\nHost: ".$message->getUri()->getHost();
             }
         } elseif ($message instanceof ResponseInterface) {
-            $msg = 'HTTP/' . $message->getProtocolVersion() . ' '
-                . $message->getStatusCode() . ' '
-                . $message->getReasonPhrase();
+            $msg = 'HTTP/'.$message->getProtocolVersion().' '
+                .$message->getStatusCode().' '
+                .$message->getReasonPhrase();
         } else {
             throw new \InvalidArgumentException('Unknown message type');
         }
@@ -35,14 +35,14 @@ public static function toString(MessageInterface $message): string
         foreach ($message->getHeaders() as $name => $values) {
             if (strtolower($name) === 'set-cookie') {
                 foreach ($values as $value) {
-                    $msg .= "\r\n{$name}: " . $value;
+                    $msg .= "\r\n{$name}: ".$value;
                 }
             } else {
-                $msg .= "\r\n{$name}: " . implode(', ', $values);
+                $msg .= "\r\n{$name}: ".implode(', ', $values);
             }
         }
 
-        return "{$msg}\r\n\r\n" . $message->getBody();
+        return "{$msg}\r\n\r\n".$message->getBody();
     }
 
     /**
@@ -190,7 +190,7 @@ public static function parseRequestUri(string $path, array $headers): string
         $host = $headers[reset($hostKey)][0];
         $scheme = substr($host, -4) === ':443' ? 'https' : 'http';
 
-        return $scheme . '://' . $host . '/' . ltrim($path, '/');
+        return $scheme.'://'.$host.'/'.ltrim($path, '/');
     }
 
     /**
@@ -231,7 +231,7 @@ public static function parseResponse(string $message): ResponseInterface
         // between status-code and reason-phrase is required. But browsers accept
         // responses without space and reason as well.
         if (!preg_match('/^HTTP\/.* [0-9]{3}( .*|$)/', $data['start-line'])) {
-            throw new \InvalidArgumentException('Invalid response string: ' . $data['start-line']);
+            throw new \InvalidArgumentException('Invalid response string: '.$data['start-line']);
         }
         $parts = explode(' ', $data['start-line'], 3);
 
diff --git a/wcfsetup/install/files/lib/system/api/guzzlehttp/psr7/src/MessageTrait.php b/wcfsetup/install/files/lib/system/api/guzzlehttp/psr7/src/MessageTrait.php
index 464bdfaa406..a85d3ab2569 100644
--- a/wcfsetup/install/files/lib/system/api/guzzlehttp/psr7/src/MessageTrait.php
+++ b/wcfsetup/install/files/lib/system/api/guzzlehttp/psr7/src/MessageTrait.php
@@ -16,7 +16,7 @@ trait MessageTrait
     private $headers = [];
 
     /** @var array<string, string> Map of lowercase header name => original name at registration */
-    private $headerNames  = [];
+    private $headerNames = [];
 
     /** @var string */
     private $protocol = '1.1';
@@ -37,6 +37,7 @@ public function withProtocolVersion($version): MessageInterface
 
         $new = clone $this;
         $new->protocol = $version;
+
         return $new;
     }
 
@@ -135,6 +136,7 @@ public function withBody(StreamInterface $body): MessageInterface
 
         $new = clone $this;
         $new->stream = $body;
+
         return $new;
     }
 
@@ -224,7 +226,7 @@ private function assertHeader($header): void
             ));
         }
 
-        if (! preg_match('/^[a-zA-Z0-9\'`#$%&*+.^_|~!-]+$/D', $header)) {
+        if (!preg_match('/^[a-zA-Z0-9\'`#$%&*+.^_|~!-]+$/D', $header)) {
             throw new \InvalidArgumentException(
                 sprintf('"%s" is not valid header name.', $header)
             );
@@ -254,7 +256,7 @@ private function assertValue(string $value): void
         // Clients must not send a request with line folding and a server sending folded headers is
         // likely very rare. Line folding is a fairly obscure feature of HTTP/1.1 and thus not accepting
         // folding is not likely to break any legitimate use case.
-        if (! preg_match('/^[\x20\x09\x21-\x7E\x80-\xFF]*$/D', $value)) {
+        if (!preg_match('/^[\x20\x09\x21-\x7E\x80-\xFF]*$/D', $value)) {
             throw new \InvalidArgumentException(
                 sprintf('"%s" is not valid header value.', $value)
             );
diff --git a/wcfsetup/install/files/lib/system/api/guzzlehttp/psr7/src/MimeType.php b/wcfsetup/install/files/lib/system/api/guzzlehttp/psr7/src/MimeType.php
index 0debbd18c35..b131bdbe7af 100644
--- a/wcfsetup/install/files/lib/system/api/guzzlehttp/psr7/src/MimeType.php
+++ b/wcfsetup/install/files/lib/system/api/guzzlehttp/psr7/src/MimeType.php
@@ -18,7 +18,7 @@ final class MimeType
         '7zip' => 'application/x-7z-compressed',
         '123' => 'application/vnd.lotus-1-2-3',
         'aab' => 'application/x-authorware-bin',
-        'aac' => 'audio/x-acc',
+        'aac' => 'audio/aac',
         'aam' => 'application/x-authorware-map',
         'aas' => 'application/x-authorware-seg',
         'abw' => 'application/x-abiword',
@@ -29,6 +29,7 @@ final class MimeType
         'acu' => 'application/vnd.acucobol',
         'acutc' => 'application/vnd.acucorp',
         'adp' => 'audio/adpcm',
+        'adts' => 'audio/aac',
         'aep' => 'application/vnd.audiograph',
         'afm' => 'application/x-font-type1',
         'afp' => 'application/vnd.ibm.modcap',
@@ -41,11 +42,16 @@ final class MimeType
         'air' => 'application/vnd.adobe.air-application-installer-package+zip',
         'ait' => 'application/vnd.dvb.ait',
         'ami' => 'application/vnd.amiga.ami',
+        'aml' => 'application/automationml-aml+xml',
+        'amlx' => 'application/automationml-amlx+zip',
         'amr' => 'audio/amr',
         'apk' => 'application/vnd.android.package-archive',
         'apng' => 'image/apng',
         'appcache' => 'text/cache-manifest',
+        'appinstaller' => 'application/appinstaller',
         'application' => 'application/x-ms-application',
+        'appx' => 'application/appx',
+        'appxbundle' => 'application/appxbundle',
         'apr' => 'application/vnd.lotus-approach',
         'arc' => 'application/x-freearc',
         'arj' => 'application/x-arj',
@@ -90,6 +96,7 @@ final class MimeType
         'bpk' => 'application/octet-stream',
         'bpmn' => 'application/octet-stream',
         'bsp' => 'model/vnd.valve.source.compiled-map',
+        'btf' => 'image/prs.btif',
         'btif' => 'image/prs.btif',
         'buffer' => 'application/octet-stream',
         'bz' => 'application/x-bzip',
@@ -141,6 +148,7 @@ final class MimeType
         'cjs' => 'application/node',
         'cla' => 'application/vnd.claymore',
         'class' => 'application/octet-stream',
+        'cld' => 'model/vnd.cld',
         'clkk' => 'application/vnd.crick.clicker.keyboard',
         'clkp' => 'application/vnd.crick.clicker.palette',
         'clkt' => 'application/vnd.crick.clicker.template',
@@ -175,6 +183,7 @@ final class MimeType
         'csv' => 'text/csv',
         'cu' => 'application/cu-seeme',
         'curl' => 'text/vnd.curl',
+        'cwl' => 'application/cwl',
         'cww' => 'application/prs.cww',
         'cxt' => 'application/x-director',
         'cxx' => 'text/x-c',
@@ -197,6 +206,7 @@ final class MimeType
         'der' => 'application/x-x509-ca-cert',
         'dfac' => 'application/vnd.dreamfactory',
         'dgc' => 'application/x-dgc-compressed',
+        'dib' => 'image/bmp',
         'dic' => 'text/x-c',
         'dir' => 'application/x-director',
         'dis' => 'application/vnd.mobius.dis',
@@ -219,6 +229,7 @@ final class MimeType
         'dotx' => 'application/vnd.openxmlformats-officedocument.wordprocessingml.template',
         'dp' => 'application/vnd.osgi.dp',
         'dpg' => 'application/vnd.dpgraph',
+        'dpx' => 'image/dpx',
         'dra' => 'audio/vnd.dra',
         'drle' => 'image/dicom-rle',
         'dsc' => 'text/prs.lines.tag',
@@ -255,7 +266,6 @@ final class MimeType
         'eot' => 'application/vnd.ms-fontobject',
         'eps' => 'application/postscript',
         'epub' => 'application/epub+zip',
-        'es' => 'application/ecmascript',
         'es3' => 'application/vnd.eszigno3+xml',
         'esa' => 'application/vnd.osgi.subsystem',
         'esf' => 'application/vnd.epson.esf',
@@ -448,6 +458,7 @@ final class MimeType
         'jsonld' => 'application/ld+json',
         'jsonml' => 'application/jsonml+json',
         'jsx' => 'text/jsx',
+        'jt' => 'model/jt',
         'jxr' => 'image/jxr',
         'jxra' => 'image/jxra',
         'jxrs' => 'image/jxrs',
@@ -552,7 +563,7 @@ final class MimeType
         'mime' => 'message/rfc822',
         'mj2' => 'video/mj2',
         'mjp2' => 'video/mj2',
-        'mjs' => 'application/javascript',
+        'mjs' => 'text/javascript',
         'mk3d' => 'video/x-matroska',
         'mka' => 'audio/x-matroska',
         'mkd' => 'text/x-markdown',
@@ -602,6 +613,8 @@ final class MimeType
         'msg' => 'application/vnd.ms-outlook',
         'msh' => 'model/mesh',
         'msi' => 'application/x-msdownload',
+        'msix' => 'application/msix',
+        'msixbundle' => 'application/msixbundle',
         'msl' => 'application/vnd.mobius.msl',
         'msm' => 'application/octet-stream',
         'msp' => 'application/octet-stream',
@@ -775,6 +788,8 @@ final class MimeType
         'pvb' => 'application/vnd.3gpp.pic-bw-var',
         'pwn' => 'application/vnd.3m.post-it-notes',
         'pya' => 'audio/vnd.ms-playready.media.pya',
+        'pyo' => 'model/vnd.pytha.pyox',
+        'pyox' => 'model/vnd.pytha.pyox',
         'pyv' => 'video/vnd.ms-playready.media.pyv',
         'qam' => 'application/vnd.epson.quickanime',
         'qbo' => 'application/vnd.intu.qbo',
@@ -923,10 +938,12 @@ final class MimeType
         'st' => 'application/vnd.sailingtracker.track',
         'stc' => 'application/vnd.sun.xml.calc.template',
         'std' => 'application/vnd.sun.xml.draw.template',
+        'step' => 'application/STEP',
         'stf' => 'application/vnd.wt.stf',
         'sti' => 'application/vnd.sun.xml.impress.template',
         'stk' => 'application/hyperstudio',
         'stl' => 'model/stl',
+        'stp' => 'application/STEP',
         'stpx' => 'model/step+xml',
         'stpxz' => 'model/step-xml+zip',
         'stpz' => 'model/step+zip',
@@ -1013,10 +1030,12 @@ final class MimeType
         'ulx' => 'application/x-glulx',
         'umj' => 'application/vnd.umajin',
         'unityweb' => 'application/vnd.unity',
+        'uo' => 'application/vnd.uoml+xml',
         'uoml' => 'application/vnd.uoml+xml',
         'uri' => 'text/uri-list',
         'uris' => 'text/uri-list',
         'urls' => 'text/uri-list',
+        'usda' => 'model/vnd.usda',
         'usdz' => 'model/vnd.usdz+zip',
         'ustar' => 'application/x-ustar',
         'utz' => 'application/vnd.uiq.theme',
@@ -1096,6 +1115,7 @@ final class MimeType
         'webmanifest' => 'application/manifest+json',
         'webp' => 'image/webp',
         'wg' => 'application/vnd.pmi.widget',
+        'wgsl' => 'text/wgsl',
         'wgt' => 'application/widget',
         'wif' => 'application/watcherinfo+xml',
         'wks' => 'application/vnd.ms-works',
@@ -1150,9 +1170,10 @@ final class MimeType
         'xel' => 'application/xcap-el+xml',
         'xenc' => 'application/xenc+xml',
         'xer' => 'application/patch-ops-error+xml',
-        'xfdf' => 'application/vnd.adobe.xfdf',
+        'xfdf' => 'application/xfdf',
         'xfdl' => 'application/vnd.xfdl',
         'xht' => 'application/xhtml+xml',
+        'xhtm' => 'application/vnd.pwg-xhtml-print+xml',
         'xhtml' => 'application/xhtml+xml',
         'xhvml' => 'application/xv+xml',
         'xif' => 'image/vnd.xiff',
@@ -1183,6 +1204,7 @@ final class MimeType
         'xpw' => 'application/vnd.intercon.formnet',
         'xpx' => 'application/vnd.intercon.formnet',
         'xsd' => 'application/xml',
+        'xsf' => 'application/prs.xsf+xml',
         'xsl' => 'application/xml',
         'xslt' => 'application/xslt+xml',
         'xsm' => 'application/vnd.syncml+xml',
@@ -1218,7 +1240,7 @@ final class MimeType
     /**
      * Determines the mimetype of a file by looking at its extension.
      *
-     * @link https://raw.githubusercontent.com/jshttp/mime-db/master/db.json
+     * @see https://raw.githubusercontent.com/jshttp/mime-db/master/db.json
      */
     public static function fromFilename(string $filename): ?string
     {
@@ -1228,7 +1250,7 @@ public static function fromFilename(string $filename): ?string
     /**
      * Maps a file extensions to a mimetype.
      *
-     * @link https://raw.githubusercontent.com/jshttp/mime-db/master/db.json
+     * @see https://raw.githubusercontent.com/jshttp/mime-db/master/db.json
      */
     public static function fromExtension(string $extension): ?string
     {
diff --git a/wcfsetup/install/files/lib/system/api/guzzlehttp/psr7/src/MultipartStream.php b/wcfsetup/install/files/lib/system/api/guzzlehttp/psr7/src/MultipartStream.php
index 3e12b74d152..41c48eef8a0 100644
--- a/wcfsetup/install/files/lib/system/api/guzzlehttp/psr7/src/MultipartStream.php
+++ b/wcfsetup/install/files/lib/system/api/guzzlehttp/psr7/src/MultipartStream.php
@@ -60,7 +60,7 @@ private function getHeaders(array $headers): string
             $str .= "{$key}: {$value}\r\n";
         }
 
-        return "--{$this->boundary}\r\n" . trim($str) . "\r\n\r\n";
+        return "--{$this->boundary}\r\n".trim($str)."\r\n\r\n";
     }
 
     /**
@@ -72,7 +72,7 @@ protected function createStream(array $elements = []): StreamInterface
 
         foreach ($elements as $element) {
             if (!is_array($element)) {
-                throw new \UnexpectedValueException("An array is expected");
+                throw new \UnexpectedValueException('An array is expected');
             }
             $this->addElement($stream, $element);
         }
@@ -137,9 +137,7 @@ private function createElement(string $name, StreamInterface $stream, ?string $f
         // Set a default Content-Type if one was not supplied
         $type = $this->getHeader($headers, 'content-type');
         if (!$type && ($filename === '0' || $filename)) {
-            if ($type = MimeType::fromFilename($filename)) {
-                $headers['Content-Type'] = $type;
-            }
+            $headers['Content-Type'] = MimeType::fromFilename($filename) ?? 'application/octet-stream';
         }
 
         return [$stream, $headers];
diff --git a/wcfsetup/install/files/lib/system/api/guzzlehttp/psr7/src/PumpStream.php b/wcfsetup/install/files/lib/system/api/guzzlehttp/psr7/src/PumpStream.php
index e90389c3b77..b52341d9ea7 100644
--- a/wcfsetup/install/files/lib/system/api/guzzlehttp/psr7/src/PumpStream.php
+++ b/wcfsetup/install/files/lib/system/api/guzzlehttp/psr7/src/PumpStream.php
@@ -60,6 +60,7 @@ public function __toString(): string
                 throw $e;
             }
             trigger_error(sprintf('%s::__toString exception: %s', self::class, (string) $e), E_USER_ERROR);
+
             return '';
         }
     }
@@ -169,6 +170,7 @@ private function pump(int $length): void
                 $data = call_user_func($this->source, $length);
                 if ($data === false || $data === null) {
                     $this->source = null;
+
                     return;
                 }
                 $this->buffer->write($data);
diff --git a/wcfsetup/install/files/lib/system/api/guzzlehttp/psr7/src/Query.php b/wcfsetup/install/files/lib/system/api/guzzlehttp/psr7/src/Query.php
index 2faab3a889e..8b94927973c 100644
--- a/wcfsetup/install/files/lib/system/api/guzzlehttp/psr7/src/Query.php
+++ b/wcfsetup/install/files/lib/system/api/guzzlehttp/psr7/src/Query.php
@@ -93,7 +93,7 @@ public static function build(array $params, $encoding = PHP_QUERY_RFC3986): stri
                 $qs .= $k;
                 $v = is_bool($v) ? (int) $v : $v;
                 if ($v !== null) {
-                    $qs .= '=' . $encoder((string) $v);
+                    $qs .= '='.$encoder((string) $v);
                 }
                 $qs .= '&';
             } else {
@@ -101,7 +101,7 @@ public static function build(array $params, $encoding = PHP_QUERY_RFC3986): stri
                     $qs .= $k;
                     $vv = is_bool($vv) ? (int) $vv : $vv;
                     if ($vv !== null) {
-                        $qs .= '=' . $encoder((string) $vv);
+                        $qs .= '='.$encoder((string) $vv);
                     }
                     $qs .= '&';
                 }
diff --git a/wcfsetup/install/files/lib/system/api/guzzlehttp/psr7/src/Request.php b/wcfsetup/install/files/lib/system/api/guzzlehttp/psr7/src/Request.php
index b17af66a2c8..db29d95d38c 100644
--- a/wcfsetup/install/files/lib/system/api/guzzlehttp/psr7/src/Request.php
+++ b/wcfsetup/install/files/lib/system/api/guzzlehttp/psr7/src/Request.php
@@ -69,7 +69,7 @@ public function getRequestTarget(): string
             $target = '/';
         }
         if ($this->uri->getQuery() != '') {
-            $target .= '?' . $this->uri->getQuery();
+            $target .= '?'.$this->uri->getQuery();
         }
 
         return $target;
@@ -85,6 +85,7 @@ public function withRequestTarget($requestTarget): RequestInterface
 
         $new = clone $this;
         $new->requestTarget = $requestTarget;
+
         return $new;
     }
 
@@ -98,6 +99,7 @@ public function withMethod($method): RequestInterface
         $this->assertMethod($method);
         $new = clone $this;
         $new->method = strtoupper($method);
+
         return $new;
     }
 
@@ -131,7 +133,7 @@ private function updateHostFromUri(): void
         }
 
         if (($port = $this->uri->getPort()) !== null) {
-            $host .= ':' . $port;
+            $host .= ':'.$port;
         }
 
         if (isset($this->headerNames['host'])) {
diff --git a/wcfsetup/install/files/lib/system/api/guzzlehttp/psr7/src/Response.php b/wcfsetup/install/files/lib/system/api/guzzlehttp/psr7/src/Response.php
index 4c6ee6f0367..8fc11478be7 100644
--- a/wcfsetup/install/files/lib/system/api/guzzlehttp/psr7/src/Response.php
+++ b/wcfsetup/install/files/lib/system/api/guzzlehttp/psr7/src/Response.php
@@ -138,6 +138,7 @@ public function withStatus($code, $reasonPhrase = ''): ResponseInterface
             $reasonPhrase = self::PHRASES[$new->statusCode];
         }
         $new->reasonPhrase = (string) $reasonPhrase;
+
         return $new;
     }
 
diff --git a/wcfsetup/install/files/lib/system/api/guzzlehttp/psr7/src/Rfc7230.php b/wcfsetup/install/files/lib/system/api/guzzlehttp/psr7/src/Rfc7230.php
index 30224018d39..8219dba4dc1 100644
--- a/wcfsetup/install/files/lib/system/api/guzzlehttp/psr7/src/Rfc7230.php
+++ b/wcfsetup/install/files/lib/system/api/guzzlehttp/psr7/src/Rfc7230.php
@@ -14,7 +14,7 @@ final class Rfc7230
      *
      * Note: header delimiter (\r\n) is modified to \r?\n to accept line feed only delimiters for BC reasons.
      *
-     * @link    https://github.com/amphp/http/blob/v1.0.1/src/Rfc7230.php#L12-L15
+     * @see https://github.com/amphp/http/blob/v1.0.1/src/Rfc7230.php#L12-L15
      *
      * @license https://github.com/amphp/http/blob/v1.0.1/LICENSE
      */
diff --git a/wcfsetup/install/files/lib/system/api/guzzlehttp/psr7/src/ServerRequest.php b/wcfsetup/install/files/lib/system/api/guzzlehttp/psr7/src/ServerRequest.php
index b2aa382dadc..1198ff63d5d 100644
--- a/wcfsetup/install/files/lib/system/api/guzzlehttp/psr7/src/ServerRequest.php
+++ b/wcfsetup/install/files/lib/system/api/guzzlehttp/psr7/src/ServerRequest.php
@@ -144,10 +144,10 @@ private static function normalizeNestedFileSpec(array $files = []): array
         foreach (array_keys($files['tmp_name']) as $key) {
             $spec = [
                 'tmp_name' => $files['tmp_name'][$key],
-                'size'     => $files['size'][$key] ?? null,
-                'error'    => $files['error'][$key] ?? null,
-                'name'     => $files['name'][$key] ?? null,
-                'type'     => $files['type'][$key] ?? null,
+                'size' => $files['size'][$key] ?? null,
+                'error' => $files['error'][$key] ?? null,
+                'name' => $files['name'][$key] ?? null,
+                'type' => $files['type'][$key] ?? null,
             ];
             $normalizedFiles[$key] = self::createUploadedFileFromSpec($spec);
         }
@@ -182,7 +182,7 @@ public static function fromGlobals(): ServerRequestInterface
 
     private static function extractHostAndPortFromAuthority(string $authority): array
     {
-        $uri = 'http://' . $authority;
+        $uri = 'http://'.$authority;
         $parts = parse_url($uri);
         if (false === $parts) {
             return [null, null];
diff --git a/wcfsetup/install/files/lib/system/api/guzzlehttp/psr7/src/Stream.php b/wcfsetup/install/files/lib/system/api/guzzlehttp/psr7/src/Stream.php
index ecd31861e17..c2477fe321f 100644
--- a/wcfsetup/install/files/lib/system/api/guzzlehttp/psr7/src/Stream.php
+++ b/wcfsetup/install/files/lib/system/api/guzzlehttp/psr7/src/Stream.php
@@ -61,8 +61,8 @@ public function __construct($stream, array $options = [])
         $this->stream = $stream;
         $meta = stream_get_meta_data($this->stream);
         $this->seekable = $meta['seekable'];
-        $this->readable = (bool)preg_match(self::READABLE_MODES, $meta['mode']);
-        $this->writable = (bool)preg_match(self::WRITABLE_MODES, $meta['mode']);
+        $this->readable = (bool) preg_match(self::READABLE_MODES, $meta['mode']);
+        $this->writable = (bool) preg_match(self::WRITABLE_MODES, $meta['mode']);
         $this->uri = $this->getMetadata('uri');
     }
 
@@ -80,12 +80,14 @@ public function __toString(): string
             if ($this->isSeekable()) {
                 $this->seek(0);
             }
+
             return $this->getContents();
         } catch (\Throwable $e) {
             if (\PHP_VERSION_ID >= 70400) {
                 throw $e;
             }
             trigger_error(sprintf('%s::__toString exception: %s', self::class, (string) $e), E_USER_ERROR);
+
             return '';
         }
     }
@@ -145,6 +147,7 @@ public function getSize(): ?int
         $stats = fstat($this->stream);
         if (is_array($stats) && isset($stats['size'])) {
             $this->size = $stats['size'];
+
             return $this->size;
         }
 
@@ -207,7 +210,7 @@ public function seek($offset, $whence = SEEK_SET): void
         }
         if (fseek($this->stream, $offset, $whence) === -1) {
             throw new \RuntimeException('Unable to seek to stream position '
-                . $offset . ' with whence ' . var_export($whence, true));
+                .$offset.' with whence '.var_export($whence, true));
         }
     }
 
diff --git a/wcfsetup/install/files/lib/system/api/guzzlehttp/psr7/src/StreamDecoratorTrait.php b/wcfsetup/install/files/lib/system/api/guzzlehttp/psr7/src/StreamDecoratorTrait.php
index 56d4104d450..dfb3e45493d 100644
--- a/wcfsetup/install/files/lib/system/api/guzzlehttp/psr7/src/StreamDecoratorTrait.php
+++ b/wcfsetup/install/files/lib/system/api/guzzlehttp/psr7/src/StreamDecoratorTrait.php
@@ -31,6 +31,7 @@ public function __get(string $name)
     {
         if ($name === 'stream') {
             $this->stream = $this->createStream();
+
             return $this->stream;
         }
 
@@ -43,12 +44,14 @@ public function __toString(): string
             if ($this->isSeekable()) {
                 $this->seek(0);
             }
+
             return $this->getContents();
         } catch (\Throwable $e) {
             if (\PHP_VERSION_ID >= 70400) {
                 throw $e;
             }
             trigger_error(sprintf('%s::__toString exception: %s', self::class, (string) $e), E_USER_ERROR);
+
             return '';
         }
     }
diff --git a/wcfsetup/install/files/lib/system/api/guzzlehttp/psr7/src/StreamWrapper.php b/wcfsetup/install/files/lib/system/api/guzzlehttp/psr7/src/StreamWrapper.php
index 2a934640356..b3655cb3a98 100644
--- a/wcfsetup/install/files/lib/system/api/guzzlehttp/psr7/src/StreamWrapper.php
+++ b/wcfsetup/install/files/lib/system/api/guzzlehttp/psr7/src/StreamWrapper.php
@@ -41,7 +41,7 @@ public static function getResource(StreamInterface $stream)
             $mode = 'w';
         } else {
             throw new \InvalidArgumentException('The stream must be readable, '
-                . 'writable, or both.');
+                .'writable, or both.');
         }
 
         return fopen('guzzle://stream', $mode, false, self::createStreamContext($stream));
@@ -55,7 +55,7 @@ public static function getResource(StreamInterface $stream)
     public static function createStreamContext(StreamInterface $stream)
     {
         return stream_context_create([
-            'guzzle' => ['stream' => $stream]
+            'guzzle' => ['stream' => $stream],
         ]);
     }
 
@@ -115,7 +115,7 @@ public function stream_seek(int $offset, int $whence): bool
      */
     public function stream_cast(int $cast_as)
     {
-        $stream = clone($this->stream);
+        $stream = clone $this->stream;
         $resource = $stream->detach();
 
         return $resource ?? false;
@@ -127,27 +127,27 @@ public function stream_cast(int $cast_as)
     public function stream_stat(): array
     {
         static $modeMap = [
-            'r'  => 33060,
+            'r' => 33060,
             'rb' => 33060,
             'r+' => 33206,
-            'w'  => 33188,
-            'wb' => 33188
+            'w' => 33188,
+            'wb' => 33188,
         ];
 
         return [
-            'dev'     => 0,
-            'ino'     => 0,
-            'mode'    => $modeMap[$this->mode],
-            'nlink'   => 0,
-            'uid'     => 0,
-            'gid'     => 0,
-            'rdev'    => 0,
-            'size'    => $this->stream->getSize() ?: 0,
-            'atime'   => 0,
-            'mtime'   => 0,
-            'ctime'   => 0,
+            'dev' => 0,
+            'ino' => 0,
+            'mode' => $modeMap[$this->mode],
+            'nlink' => 0,
+            'uid' => 0,
+            'gid' => 0,
+            'rdev' => 0,
+            'size' => $this->stream->getSize() ?: 0,
+            'atime' => 0,
+            'mtime' => 0,
+            'ctime' => 0,
             'blksize' => 0,
-            'blocks'  => 0
+            'blocks' => 0,
         ];
     }
 
@@ -157,19 +157,19 @@ public function stream_stat(): array
     public function url_stat(string $path, int $flags): array
     {
         return [
-            'dev'     => 0,
-            'ino'     => 0,
-            'mode'    => 0,
-            'nlink'   => 0,
-            'uid'     => 0,
-            'gid'     => 0,
-            'rdev'    => 0,
-            'size'    => 0,
-            'atime'   => 0,
-            'mtime'   => 0,
-            'ctime'   => 0,
+            'dev' => 0,
+            'ino' => 0,
+            'mode' => 0,
+            'nlink' => 0,
+            'uid' => 0,
+            'gid' => 0,
+            'rdev' => 0,
+            'size' => 0,
+            'atime' => 0,
+            'mtime' => 0,
+            'ctime' => 0,
             'blksize' => 0,
-            'blocks'  => 0
+            'blocks' => 0,
         ];
     }
 }
diff --git a/wcfsetup/install/files/lib/system/api/guzzlehttp/psr7/src/Uri.php b/wcfsetup/install/files/lib/system/api/guzzlehttp/psr7/src/Uri.php
index 09e878d3d96..fbba7f12303 100644
--- a/wcfsetup/install/files/lib/system/api/guzzlehttp/psr7/src/Uri.php
+++ b/wcfsetup/install/files/lib/system/api/guzzlehttp/psr7/src/Uri.php
@@ -25,7 +25,7 @@ class Uri implements UriInterface, \JsonSerializable
     private const HTTP_DEFAULT_HOST = 'localhost';
 
     private const DEFAULT_PORTS = [
-        'http'  => 80,
+        'http' => 80,
         'https' => 443,
         'ftp' => 21,
         'gopher' => 70,
@@ -41,14 +41,14 @@ class Uri implements UriInterface, \JsonSerializable
     /**
      * Unreserved characters for use in a regex.
      *
-     * @link https://tools.ietf.org/html/rfc3986#section-2.3
+     * @see https://tools.ietf.org/html/rfc3986#section-2.3
      */
     private const CHAR_UNRESERVED = 'a-zA-Z0-9_\-\.~';
 
     /**
      * Sub-delims for use in a regex.
      *
-     * @link https://tools.ietf.org/html/rfc3986#section-2.2
+     * @see https://tools.ietf.org/html/rfc3986#section-2.2
      */
     private const CHAR_SUB_DELIMS = '!\$&\'\(\)\*\+,;=';
     private const QUERY_SEPARATORS_REPLACEMENT = ['=' => '%3D', '&' => '%26'];
@@ -87,6 +87,7 @@ public function __construct(string $uri = '')
             $this->applyParts($parts);
         }
     }
+
     /**
      * UTF-8 aware \parse_url() replacement.
      *
@@ -121,7 +122,7 @@ static function ($matches) {
             $url
         );
 
-        $result = parse_url($prefix . $encodedUrl);
+        $result = parse_url($prefix.$encodedUrl);
 
         if ($result === false) {
             return false;
@@ -161,7 +162,7 @@ public function __toString(): string
      * `file:///` is the more common syntax for the file scheme anyway (Chrome for example redirects to
      * that format).
      *
-     * @link https://tools.ietf.org/html/rfc3986#section-5.3
+     * @see https://tools.ietf.org/html/rfc3986#section-5.3
      */
     public static function composeComponents(?string $scheme, ?string $authority, string $path, ?string $query, ?string $fragment): string
     {
@@ -169,25 +170,25 @@ public static function composeComponents(?string $scheme, ?string $authority, st
 
         // weak type checks to also accept null until we can add scalar type hints
         if ($scheme != '') {
-            $uri .= $scheme . ':';
+            $uri .= $scheme.':';
         }
 
         if ($authority != '' || $scheme === 'file') {
-            $uri .= '//' . $authority;
+            $uri .= '//'.$authority;
         }
 
         if ($authority != '' && $path != '' && $path[0] != '/') {
-            $path = '/' . $path;
+            $path = '/'.$path;
         }
 
         $uri .= $path;
 
         if ($query != '') {
-            $uri .= '?' . $query;
+            $uri .= '?'.$query;
         }
 
         if ($fragment != '') {
-            $uri .= '#' . $fragment;
+            $uri .= '#'.$fragment;
         }
 
         return $uri;
@@ -218,7 +219,7 @@ public static function isDefaultPort(UriInterface $uri): bool
      * @see Uri::isNetworkPathReference
      * @see Uri::isAbsolutePathReference
      * @see Uri::isRelativePathReference
-     * @link https://tools.ietf.org/html/rfc3986#section-4
+     * @see https://tools.ietf.org/html/rfc3986#section-4
      */
     public static function isAbsolute(UriInterface $uri): bool
     {
@@ -230,7 +231,7 @@ public static function isAbsolute(UriInterface $uri): bool
      *
      * A relative reference that begins with two slash characters is termed an network-path reference.
      *
-     * @link https://tools.ietf.org/html/rfc3986#section-4.2
+     * @see https://tools.ietf.org/html/rfc3986#section-4.2
      */
     public static function isNetworkPathReference(UriInterface $uri): bool
     {
@@ -242,7 +243,7 @@ public static function isNetworkPathReference(UriInterface $uri): bool
      *
      * A relative reference that begins with a single slash character is termed an absolute-path reference.
      *
-     * @link https://tools.ietf.org/html/rfc3986#section-4.2
+     * @see https://tools.ietf.org/html/rfc3986#section-4.2
      */
     public static function isAbsolutePathReference(UriInterface $uri): bool
     {
@@ -257,7 +258,7 @@ public static function isAbsolutePathReference(UriInterface $uri): bool
      *
      * A relative reference that does not begin with a slash character is termed a relative-path reference.
      *
-     * @link https://tools.ietf.org/html/rfc3986#section-4.2
+     * @see https://tools.ietf.org/html/rfc3986#section-4.2
      */
     public static function isRelativePathReference(UriInterface $uri): bool
     {
@@ -276,7 +277,7 @@ public static function isRelativePathReference(UriInterface $uri): bool
      * @param UriInterface      $uri  The URI to check
      * @param UriInterface|null $base An optional base URI to compare against
      *
-     * @link https://tools.ietf.org/html/rfc3986#section-4.4
+     * @see https://tools.ietf.org/html/rfc3986#section-4.4
      */
     public static function isSameDocumentReference(UriInterface $uri, UriInterface $base = null): bool
     {
@@ -352,7 +353,7 @@ public static function withQueryValues(UriInterface $uri, array $keyValueArray):
     /**
      * Creates a URI from a hash of `parse_url` components.
      *
-     * @link http://php.net/manual/en/function.parse-url.php
+     * @see http://php.net/manual/en/function.parse-url.php
      *
      * @throws MalformedUriException If the components do not form a valid URI.
      */
@@ -374,11 +375,11 @@ public function getAuthority(): string
     {
         $authority = $this->host;
         if ($this->userInfo !== '') {
-            $authority = $this->userInfo . '@' . $authority;
+            $authority = $this->userInfo.'@'.$authority;
         }
 
         if ($this->port !== null) {
-            $authority .= ':' . $this->port;
+            $authority .= ':'.$this->port;
         }
 
         return $authority;
@@ -435,7 +436,7 @@ public function withUserInfo($user, $password = null): UriInterface
     {
         $info = $this->filterUserInfoComponent($user);
         if ($password !== null) {
-            $info .= ':' . $this->filterUserInfoComponent($password);
+            $info .= ':'.$this->filterUserInfoComponent($password);
         }
 
         if ($this->userInfo === $info) {
@@ -563,7 +564,7 @@ private function applyParts(array $parts): void
             ? $this->filterQueryAndFragment($parts['fragment'])
             : '';
         if (isset($parts['pass'])) {
-            $this->userInfo .= ':' . $this->filterUserInfoComponent($parts['pass']);
+            $this->userInfo .= ':'.$this->filterUserInfoComponent($parts['pass']);
         }
 
         $this->removeDefaultPort();
@@ -595,7 +596,7 @@ private function filterUserInfoComponent($component): string
         }
 
         return preg_replace_callback(
-            '/(?:[^%' . self::CHAR_UNRESERVED . self::CHAR_SUB_DELIMS . ']+|%(?![A-Fa-f0-9]{2}))/',
+            '/(?:[^%'.self::CHAR_UNRESERVED.self::CHAR_SUB_DELIMS.']+|%(?![A-Fa-f0-9]{2}))/',
             [$this, 'rawurlencodeMatchZero'],
             $component
         );
@@ -627,7 +628,7 @@ private function filterPort($port): ?int
         }
 
         $port = (int) $port;
-        if (0 > $port || 0xffff < $port) {
+        if (0 > $port || 0xFFFF < $port) {
             throw new \InvalidArgumentException(
                 sprintf('Invalid port: %d. Must be between 0 and 65535', $port)
             );
@@ -664,7 +665,7 @@ private static function generateQueryString(string $key, ?string $value): string
         $queryString = strtr($key, self::QUERY_SEPARATORS_REPLACEMENT);
 
         if ($value !== null) {
-            $queryString .= '=' . strtr($value, self::QUERY_SEPARATORS_REPLACEMENT);
+            $queryString .= '='.strtr($value, self::QUERY_SEPARATORS_REPLACEMENT);
         }
 
         return $queryString;
@@ -691,7 +692,7 @@ private function filterPath($path): string
         }
 
         return preg_replace_callback(
-            '/(?:[^' . self::CHAR_UNRESERVED . self::CHAR_SUB_DELIMS . '%:@\/]++|%(?![A-Fa-f0-9]{2}))/',
+            '/(?:[^'.self::CHAR_UNRESERVED.self::CHAR_SUB_DELIMS.'%:@\/]++|%(?![A-Fa-f0-9]{2}))/',
             [$this, 'rawurlencodeMatchZero'],
             $path
         );
@@ -711,7 +712,7 @@ private function filterQueryAndFragment($str): string
         }
 
         return preg_replace_callback(
-            '/(?:[^' . self::CHAR_UNRESERVED . self::CHAR_SUB_DELIMS . '%:@\/\?]++|%(?![A-Fa-f0-9]{2}))/',
+            '/(?:[^'.self::CHAR_UNRESERVED.self::CHAR_SUB_DELIMS.'%:@\/\?]++|%(?![A-Fa-f0-9]{2}))/',
             [$this, 'rawurlencodeMatchZero'],
             $str
         );
diff --git a/wcfsetup/install/files/lib/system/api/guzzlehttp/psr7/src/UriNormalizer.php b/wcfsetup/install/files/lib/system/api/guzzlehttp/psr7/src/UriNormalizer.php
index e12971eddae..3d98210b05c 100644
--- a/wcfsetup/install/files/lib/system/api/guzzlehttp/psr7/src/UriNormalizer.php
+++ b/wcfsetup/install/files/lib/system/api/guzzlehttp/psr7/src/UriNormalizer.php
@@ -11,7 +11,7 @@
  *
  * @author Tobias Schultze
  *
- * @link https://tools.ietf.org/html/rfc3986#section-6
+ * @see https://tools.ietf.org/html/rfc3986#section-6
  */
 final class UriNormalizer
 {
@@ -119,7 +119,7 @@ final class UriNormalizer
      * @param UriInterface $uri   The URI to normalize
      * @param int          $flags A bitmask of normalizations to apply, see constants
      *
-     * @link https://tools.ietf.org/html/rfc3986#section-6.2
+     * @see https://tools.ietf.org/html/rfc3986#section-6.2
      */
     public static function normalize(UriInterface $uri, int $flags = self::PRESERVING_NORMALIZATIONS): UriInterface
     {
@@ -174,7 +174,7 @@ public static function normalize(UriInterface $uri, int $flags = self::PRESERVIN
      * @param UriInterface $uri2           An URI to compare
      * @param int          $normalizations A bitmask of normalizations to apply, see constants
      *
-     * @link https://tools.ietf.org/html/rfc3986#section-6.1
+     * @see https://tools.ietf.org/html/rfc3986#section-6.1
      */
     public static function isEquivalent(UriInterface $uri1, UriInterface $uri2, int $normalizations = self::PRESERVING_NORMALIZATIONS): bool
     {
diff --git a/wcfsetup/install/files/lib/system/api/guzzlehttp/psr7/src/UriResolver.php b/wcfsetup/install/files/lib/system/api/guzzlehttp/psr7/src/UriResolver.php
index 426e5c9adf1..b942d1cece6 100644
--- a/wcfsetup/install/files/lib/system/api/guzzlehttp/psr7/src/UriResolver.php
+++ b/wcfsetup/install/files/lib/system/api/guzzlehttp/psr7/src/UriResolver.php
@@ -11,14 +11,14 @@
  *
  * @author Tobias Schultze
  *
- * @link https://tools.ietf.org/html/rfc3986#section-5
+ * @see https://tools.ietf.org/html/rfc3986#section-5
  */
 final class UriResolver
 {
     /**
      * Removes dot segments from a path and returns the new path.
      *
-     * @link http://tools.ietf.org/html/rfc3986#section-5.2.4
+     * @see http://tools.ietf.org/html/rfc3986#section-5.2.4
      */
     public static function removeDotSegments(string $path): string
     {
@@ -40,7 +40,7 @@ public static function removeDotSegments(string $path): string
 
         if ($path[0] === '/' && (!isset($newPath[0]) || $newPath[0] !== '/')) {
             // Re-add the leading slash if necessary for cases like "/.."
-            $newPath = '/' . $newPath;
+            $newPath = '/'.$newPath;
         } elseif ($newPath !== '' && ($segment === '.' || $segment === '..')) {
             // Add the trailing slash if necessary
             // If newPath is not empty, then $segment must be set and is the last segment from the foreach
@@ -53,7 +53,7 @@ public static function removeDotSegments(string $path): string
     /**
      * Converts the relative URI into a new URI that is resolved against the base URI.
      *
-     * @link http://tools.ietf.org/html/rfc3986#section-5.2
+     * @see http://tools.ietf.org/html/rfc3986#section-5.2
      */
     public static function resolve(UriInterface $base, UriInterface $rel): UriInterface
     {
@@ -80,13 +80,13 @@ public static function resolve(UriInterface $base, UriInterface $rel): UriInterf
                     $targetPath = $rel->getPath();
                 } else {
                     if ($targetAuthority != '' && $base->getPath() === '') {
-                        $targetPath = '/' . $rel->getPath();
+                        $targetPath = '/'.$rel->getPath();
                     } else {
                         $lastSlashPos = strrpos($base->getPath(), '/');
                         if ($lastSlashPos === false) {
                             $targetPath = $rel->getPath();
                         } else {
-                            $targetPath = substr($base->getPath(), 0, $lastSlashPos + 1) . $rel->getPath();
+                            $targetPath = substr($base->getPath(), 0, $lastSlashPos + 1).$rel->getPath();
                         }
                     }
                 }
@@ -185,7 +185,7 @@ private static function getRelativePath(UriInterface $base, UriInterface $target
             }
         }
         $targetSegments[] = $targetLastSegment;
-        $relativePath = str_repeat('../', count($sourceSegments)) . implode('/', $targetSegments);
+        $relativePath = str_repeat('../', count($sourceSegments)).implode('/', $targetSegments);
 
         // A reference to am empty last segment or an empty first sub-segment must be prefixed with "./".
         // This also applies to a segment with a colon character (e.g., "file:colon") that cannot be used
diff --git a/wcfsetup/install/files/lib/system/api/guzzlehttp/psr7/src/Utils.php b/wcfsetup/install/files/lib/system/api/guzzlehttp/psr7/src/Utils.php
index 3a4cf39464e..49b481e53b7 100644
--- a/wcfsetup/install/files/lib/system/api/guzzlehttp/psr7/src/Utils.php
+++ b/wcfsetup/install/files/lib/system/api/guzzlehttp/psr7/src/Utils.php
@@ -90,6 +90,7 @@ public static function copyToString(StreamInterface $stream, int $maxLen = -1):
                 }
                 $buffer .= $buf;
             }
+
             return $buffer;
         }
 
@@ -174,7 +175,7 @@ public static function modifyRequest(RequestInterface $request, array $changes):
                     $standardPorts = ['http' => 80, 'https' => 443];
                     $scheme = $changes['uri']->getScheme();
                     if (isset($standardPorts[$scheme]) && $port != $standardPorts[$scheme]) {
-                        $changes['set_headers']['Host'] .= ':' . $port;
+                        $changes['set_headers']['Host'] .= ':'.$port;
                     }
                 }
             }
@@ -291,6 +292,7 @@ public static function streamFor($resource = '', array $options = []): StreamInt
                 fwrite($stream, (string) $resource);
                 fseek($stream, 0);
             }
+
             return new Stream($stream, $options);
         }
 
@@ -308,6 +310,7 @@ public static function streamFor($resource = '', array $options = []): StreamInt
                     fseek($stream, 0);
                     $resource = $stream;
                 }
+
                 return new Stream($resource, $options);
             case 'object':
                 /** @var object $resource */
@@ -320,6 +323,7 @@ public static function streamFor($resource = '', array $options = []): StreamInt
                         }
                         $result = $resource->current();
                         $resource->next();
+
                         return $result;
                     }, $options);
                 } elseif (method_exists($resource, '__toString')) {
@@ -334,7 +338,7 @@ public static function streamFor($resource = '', array $options = []): StreamInt
             return new PumpStream($resource, $options);
         }
 
-        throw new \InvalidArgumentException('Invalid resource type: ' . gettype($resource));
+        throw new \InvalidArgumentException('Invalid resource type: '.gettype($resource));
     }
 
     /**