What Renovate type are you using?
Renovate GitHub App
Describe the bug
The commits created by the renovate bot are not gpg signed anymore.
This prevents merging these requests if a repository requires signed commits.
Did you see anything helpful in debug logs?
No
The app has partially migrated to using "gitFs" where it does a shallow clone of repos instead of picking individual files. This allows for a lot of advanced functionality now such vendored modules, go mod tidy, etc. Unfortunately for now we don't have signed commits supported! Coming soon.
Depends on #3053
Commits from the app should be Verified from now on. Example from this repo:

@rarkins Seems to be broken again.
You can take this as an example: https://github.com/KnisterPeter/tsdi/pull/519
Ugh, sorry.
Should be back for good now for any future commits/rebases/etc

Most helpful comment
The app has partially migrated to using "gitFs" where it does a shallow clone of repos instead of picking individual files. This allows for a lot of advanced functionality now such vendored modules, go mod tidy, etc. Unfortunately for now we don't have signed commits supported! Coming soon.
Depends on #3053