GitHub Actions improvements

.rubocop.yml

@@ -1,6 +1,12 @@
 inherit_from:
   - https://relaxed.ruby.style/rubocop.yml
 
+require:
+  - rubocop-packaging
+  - rubocop-performance
+  - rubocop-rails
+  - rubocop-rspec
+
 AllCops:
   Exclude:
     - bin/*
@@ -17,6 +23,14 @@ Layout/LineLength:
   Enabled: true
   Max: 120
 
+RSpec/ExampleLength:
+  # default 5
+  Max: 12
+
+RSpec/MultipleExpectations:
+  # default 1
+  Max: 4
+
 Style/HashEachMethods:
   Enabled: true