Fix Rails/RakeEnvironment cop (#28782)

.rubocop.yml

@@ -109,6 +109,16 @@ Rails/LexicallyScopedActionFilter:
   Exclude:
     - 'app/controllers/auth/*'
 
+# Reason: These tasks are doing local work which do not need full env loaded
+# https://docs.rubocop.org/rubocop-rails/cops_rails.html#railsrakeenvironment
+Rails/RakeEnvironment:
+  Exclude:
+    - 'lib/tasks/auto_annotate_models.rake'
+    - 'lib/tasks/emojis.rake'
+    - 'lib/tasks/mastodon.rake'
+    - 'lib/tasks/repo.rake'
+    - 'lib/tasks/statistics.rake'
+
 # Reason: There are appropriate times to use these features
 # https://docs.rubocop.org/rubocop-rails/cops_rails.html#railsskipsmodelvalidations
 Rails/SkipsModelValidations: