Node.js 16 actions are deprecated. Please update the following actions to use Node.js 20: actions/checkout@v3, determinatesystems/magic-nix-cache-action@v2, webfactory/ssh-agent@v0.6.0. For more information see: https://github.blog/changelog/2023-09-22-github-actions-transitioning-from-node-16-to-node-20/.