Update rubocop-rails to version 2.38.0

Author: depfu[bot]

Gemfile.lock

@@ -275,7 +275,7 @@ GEM
     rubocop-factory_bot (2.28.0)
       lint_roller (~> 1.1)
       rubocop (~> 1.72, >= 1.72.1)
-    rubocop-rails (2.37.0)
+    rubocop-rails (2.38.0)
       activesupport (>= 4.2.0)
       lint_roller (~> 1.1)
       rack (>= 1.1)