wip: debug gem version in CI

Author: flavorjones

.github/workflows/ci.yml

@@ -138,6 +138,7 @@ jobs:
         uses: actions/download-artifact@v3
         with:
           name: gem-ruby
+      - run: gem -v
       - name: Install gem-ruby
         run: gem install --local *.gem --verbose
       - name: Run tests