Update dependency rubocop-rails to v2.20.1

Gemfile.lock

@@ -373,6 +373,7 @@ GEM
       marcel (~> 1.0.1)
       mime-types
       terrapin (~> 0.6.0)
+    language_server-protocol (3.17.0.3)
     launchy (2.5.2)
       addressable (~> 2.8)
     letter_opener (1.8.1)
@@ -591,8 +592,9 @@ GEM
       sidekiq (>= 2.4.0)
     rspec-support (3.12.0)
     rspec_chunked (0.6)
-    rubocop (1.52.1)
+    rubocop (1.54.1)
       json (~> 2.3)
+      language_server-protocol (>= 3.17.0)
       parallel (~> 1.10)
       parser (>= 3.2.2.3)
       rainbow (>= 2.2.2, < 4.0)
@@ -610,7 +612,7 @@ GEM
     rubocop-performance (1.18.0)
       rubocop (>= 1.7.0, < 2.0)
       rubocop-ast (>= 0.4.0)
-    rubocop-rails (2.19.1)
+    rubocop-rails (2.20.2)
       activesupport (>= 4.2.0)
       rack (>= 1.1)
       rubocop (>= 1.33.0, < 2.0)