Merge pull request #218 from trliner/fix_rspec_action

Update the `rspec` GitHub Action to properly execute

.github/workflows/rspec.yml

@@ -9,9 +9,8 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
-      - uses: actions/setup-ruby@v1
+      - uses: ruby/setup-ruby@v1
         with:
           ruby-version: '2.7'
-      - run: gem install rspec bundler
       - run: bundle install
       - run: rspec spec