.github/workflows/checks.yml in regio-0.2.0 vs .github/workflows/checks.yml in regio-0.3.0

@@ -5,16 +5,20 @@
 concurrency:
   group: '${{ github.workflow }} @ ${{ github.event.pull_request.head.label || github.head_ref || github.ref }}'
   cancel-in-progress: true
 jobs:
   rspec:
-    name: RSpec
+    name: RSpec with ruby ${{matrix.ruby}}
     runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        ruby: ['2.6', '2.7', '3.0', '3.1', head]
     steps:
       - uses: actions/checkout@v3
       - uses: ruby/setup-ruby@v1
         with:
-          ruby-version: 3.1.2
+          ruby-version: ${{matrix.ruby}}
           bundler-cache: true
       - name: Test with RSpec
         run: COVERAGE=true bundle exec rspec
   rubocop:
     name: RuboCop