Merge pull request #91 from ruby/dependabot/github_actions/ruby/setup-ruby-1.221.0

Bump ruby/setup-ruby from 1.215.0 to 1.221.0

Author: hsbt

.github/workflows/publish.yml

@@ -65,7 +65,7 @@ jobs:
         if: ${{ github.actor != 'dependabot[bot]' && github.event.pull_request.head.repo.fork == false }}
 
       - name: Resolve build_ruby version
-        uses: ruby/setup-ruby@2654679fe7f7c29875c669398a8ec0791b8a64a1 # v1.215.0
+        uses: ruby/setup-ruby@32110d4e311bd8996b2a82bf2a43b714ccc91777 # v1.221.0
         with:
           ruby-version: '${{ matrix.entry.build_ruby }}'
           bundler: none