Roll back for 2.7 compatibility

Gemfile.lock

@@ -23,19 +23,21 @@ GEM
     rainbow (3.1.1)
     rake (13.0.6)
     regexp_parser (2.9.2)
-    rubocop (1.66.1)
+    rexml (3.3.9)
+    rubocop (1.64.1)
       json (~> 2.3)
       language_server-protocol (>= 3.17.0)
       parallel (~> 1.10)
       parser (>= 3.3.0.2)
       rainbow (>= 2.2.2, < 4.0)
-      regexp_parser (>= 2.4, < 3.0)
-      rubocop-ast (>= 1.32.2, < 2.0)
+      regexp_parser (>= 1.8, < 3.0)
+      rexml (>= 3.2.5, < 4.0)
+      rubocop-ast (>= 1.31.1, < 2.0)
       ruby-progressbar (~> 1.7)
       unicode-display_width (>= 2.4.0, < 3.0)
     rubocop-ast (1.34.1)
       parser (>= 3.3.1.0)
-    rubocop-performance (1.22.1)
+    rubocop-performance (1.21.1)
       rubocop (>= 1.48.1, < 2.0)
       rubocop-ast (>= 1.31.1, < 2.0)
     ruby-progressbar (1.13.0)
@@ -45,18 +47,18 @@ GEM
       simplecov_json_formatter (~> 0.1)
     simplecov-html (0.13.1)
     simplecov_json_formatter (0.1.4)
-    standard (1.41.1)
+    standard (1.37.0)
       language_server-protocol (~> 3.17.0.2)
       lint_roller (~> 1.0)
-      rubocop (~> 1.66.0)
+      rubocop (~> 1.64.0)
       standard-custom (~> 1.0.0)
-      standard-performance (~> 1.5)
+      standard-performance (~> 1.4)
     standard-custom (1.0.2)
       lint_roller (~> 1.0)
       rubocop (~> 1.50)
-    standard-performance (1.5.0)
+    standard-performance (1.4.0)
       lint_roller (~> 1.1)
-      rubocop-performance (~> 1.22.0)
+      rubocop-performance (~> 1.21.0)
     unicode-display_width (2.6.0)
 
 PLATFORMS