Bump dotenv-rails from 2.8.1 to 3.1.0

Bumps [dotenv-rails](https://github.com/bkeepers/dotenv) from 2.8.1 to 3.1.0.
- [Release notes](https://github.com/bkeepers/dotenv/releases)
- [Changelog](https://github.com/bkeepers/dotenv/blob/main/Changelog.md)
- [Commits](bkeepers/dotenv@v2.8.1...v3.1.0)

---
updated-dependencies:
- dependency-name: dotenv-rails
  dependency-type: direct:development
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

Gemfile

@@ -69,7 +69,7 @@ gem "bootsnap", require: false
 group :development, :test do
   # See https://guides.rubyonrails.org/debugging_rails_applications.html#debugging-with-the-debug-gem
   gem "debug", platforms: %i[mri mingw x64_mingw]
-  gem "dotenv-rails", "~> 2.8"
+  gem "dotenv-rails", "~> 3.1"
 end
 
 group :development do

Gemfile.lock

@@ -156,10 +156,10 @@ GEM
       activerecord (>= 4.2, < 8)
     dockerfile-rails (1.6.6)
       rails (>= 3.0.0)
-    dotenv (2.8.1)
-    dotenv-rails (2.8.1)
-      dotenv (= 2.8.1)
-      railties (>= 3.2)
+    dotenv (3.1.0)
+    dotenv-rails (3.1.0)
+      dotenv (= 3.1.0)
+      railties (>= 6.1)
     drb (2.2.1)
     erubi (1.12.0)
     execjs (2.9.1)
@@ -496,7 +496,7 @@ DEPENDENCIES
   devise_invitable (~> 2.0)
   discard (~> 1.2)
   dockerfile-rails (>= 1.5)
-  dotenv-rails (~> 2.8)
+  dotenv-rails (~> 3.1)
   factory_bot_rails (~> 6.2)
   faker (~> 3.2)
   guard