Add a lot more versions/variants (more Java versions, more base images, more OpenJDK implementations) - #299

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Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: actions/checkout@v4. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/

Restore cache failed: Dependencies file is not found in /home/runner/work/tomcat/tomcat. Supported file pattern: go.mod