lycheeverse/lychee-action@c053181aa0c3d17606addfe97a9075a32723548a is not allowed to be used in opensafely/documentation. Actions in this workflow must be: within a repository owned by opensafely, created by GitHub, verified in the GitHub Marketplace, or matching the following: lycheeverse/lychee-action@ec3ed119d4f44ad2673a7232460dc7dff59d2421, voxmedia/github-action-slack-notify-build@3665186a8c1a022b28a1dbe0954e73aa9081ea9e, opensafely-core/setup-action@v1.