Run bin/rubocop in CI 🤖

Author: artkirienko

.github/workflows/ruby.yml

@@ -24,7 +24,7 @@ jobs:
           gem install bundler -v 2.0.2
           bundle install --jobs 4 --retry 3
           bin/rake
-          bundle exec rubocop
+          bin/rubocop
           bundle exec fasterer
       - name: Upload coverage to Codecov
         uses: codecov/codecov-action@v1