Node.js 16 actions are deprecated. Please update the following actions to use Node.js 20: DeterminateSystems/magic-nix-cache-action@v2, HatsuneMiku3939/direnv-action@v1.0.2. For more information see: https://github.blog/changelog/2023-09-22-github-actions-transitioning-from-node-16-to-node-20/.