test: Update build setup

.rubocop.yml

@@ -4,14 +4,12 @@ inherit_from:
 
 plugins:
   - rubocop-capybara
+  - rubocop-packaging
   - rubocop-performance
   - rubocop-rails
   - rubocop-rspec
   - rubocop-rspec_rails
 
-require:
-  - rubocop-packaging
-
 AllCops:
   Exclude:
     - bin/*