Use explicit config loading from bin/rubocop (#33256)

.github/workflows/lint-ruby.yml

@@ -9,6 +9,7 @@ on:
       - 'Gemfile*'
       - '.rubocop*.yml'
       - '.ruby-version'
+      - 'bin/rubocop'
       - 'config/brakeman.ignore'
       - '**/*.rb'
       - '**/*.rake'
@@ -19,6 +20,7 @@ on:
       - 'Gemfile*'
       - '.rubocop*.yml'
       - '.ruby-version'
+      - 'bin/rubocop'
       - 'config/brakeman.ignore'
       - '**/*.rb'
       - '**/*.rake'