rubocop.yml in groupie-0.6.0

- old
+ new

@@ -4,23 +4,24 @@
   rubocop:
     name: Rubocop
     runs-on: ubuntu-latest
     steps:
       - name: Check out code
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
       - name: Install Ruby & Gems
-        uses: ruby/setup-ruby@v1 # Uses .ruby-version as version input
+        uses: ruby/setup-ruby@v1
         with:
-          ruby-version: 3.0
+          ruby-version: 2.7
           bundler-cache: true
       - name: Rubocop
         # https://github.com/reviewdog/action-rubocop
         uses: reviewdog/action-rubocop@v2
         with:
           fail_on_error: true
           filter_mode: nofilter
           github_token: ${{ secrets.github_token }}
           reporter: github-pr-review
           rubocop_version: gemfile
+          rubocop_flags: --display-only-fail-level-offenses --safe
           # Rely on Bundler-installed gems so don't install them again
           use_bundler: true
           skip_install: true