Bumps [linuxdoc](https://github.com/return42/linuxdoc) from 20230321 to 20230506.
- [Changelog](https://github.com/return42/linuxdoc/blob/master/CHANGELOG)
- [Commits](https://github.com/return42/linuxdoc/commits

)

---
updated-dependencies:
- dependency-name: linuxdoc
  dependency-type: direct:development
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>