carpentries/actions/check-valid-pr@main and carpentries/actions/comment-diff@main are not allowed to be used in MetOffice/git-working-practices. Actions in this workflow must be: within a repository that belongs to your Enterprise account, created by GitHub, verified in the GitHub Marketplace, or matching the following: wechuli/allcheckspassed@v*, cylc/setup-cylc@v*, mamba-org/setup-micromamba@v*.