feat: reimplement read-action-input in bash instead of node#22

AkihiroSuda merged 2 commits intoreproducible-containers:mainreproducible-containers/buildkit-cache-dance:mainfrom

NgoKimPhu:ft/remove-node-dependencyNgoKimPhu/buildkit-cache-dance:ft/remove-node-dependencyCopy head branch name to clipboard