Output the g++ version.

Author: neogeek

.github/workflows/test.workflow.yml

@@ -31,6 +31,9 @@ jobs:
       - name: Check out repository
         uses: actions/checkout@v4
 
+      - name: Check g++ version
+        run: g++ --version
+
       - name: Run tests
         run: ./bin/test.sh
   test-csharp: