Announce Ruby version.

Author: gkellogg

.github/workflows/ci.yml

@@ -40,6 +40,7 @@ jobs:
         uses: ruby/setup-ruby@v1
         with:
           ruby-version: ${{ matrix.ruby }}
+        run: ruby --version
       - name: Install dependencies
         run: bundle install --jobs 4 --retry 3
       - name: Run tests