Fix Renovate integration

As of right now, renovate / dependabot do not auto merge.

While I'm not in love with the idea of a bot revving dependencies due to the issues we've had with yjs / prose versioning incompatibilities, this should be fixed.

Start by locating the repository's Renovate or Dependabot configuration and the auto-merge workflow, since no files or failing checks are named. Reproduce a dependency update and trace why it does not merge automatically, while checking the reported yjs/prose version incompatibility concern. Done means the intended dependency updates auto-merge without introducing those incompatibilities.

Written by the indexing model from the issue text.