Enable Rubocop Style/Semicolon with config (#23652)

.rubocop.yml

@@ -192,6 +192,11 @@ Style/RedundantBegin:
 Style/RescueStandardError:
   EnforcedStyle: implicit
 
+# Reason: Simplify some spec layouts
+# https://docs.rubocop.org/rubocop/cops_style.html#stylesemicolon
+Style/Semicolon:
+  AllowAsExpressionSeparator: true
+
 # Reason: Originally disabled for CodeClimate, and no config consensus has been found
 # https://docs.rubocop.org/rubocop/cops_style.html#stylesymbolarray
 Style/SymbolArray:

.rubocop_todo.yml

@@ -1336,13 +1336,6 @@ Style/SafeNavigation:
     - 'app/models/concerns/account_finder_concern.rb'
     - 'app/models/status.rb'
 
-# This cop supports safe autocorrection (--autocorrect).
-# Configuration parameters: AllowAsExpressionSeparator.
-Style/Semicolon:
-  Exclude:
-    - 'spec/services/activitypub/process_status_update_service_spec.rb'
-    - 'spec/validators/blacklisted_email_validator_spec.rb'
-
 # This cop supports safe autocorrection (--autocorrect).
 # Configuration parameters: EnforcedStyle.
 # SupportedStyles: only_raise, only_fail, semantic