s1-secops-skills v1.2.16: sync claude-skills v1.2.16 release (MCP 1.2.4 defect fixes) - #85

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/