Action failed with error: Error: Unable to locate executable file: cachix. Please verify either the file path exists or the file can be found within a directory specified by the PATH environment variable. Also check the file mode to verify the file is executable.

The following actions uses node12 which is deprecated and will be forced to run on node16: actions/checkout@v2, cachix/install-nix-action@v15, cachix/cachix-action@v10. For more info: https://github.blog/changelog/2023-06-13-github-actions-all-actions-will-run-on-node16-instead-of-node12-by-default/