Bump dulwich from 0.22.3 to 0.22.4

Bumps [dulwich](https://github.com/dulwich/dulwich) from 0.22.3 to 0.22.4.
- [Release notes](https://github.com/dulwich/dulwich/releases)
- [Changelog](https://github.com/jelmer/dulwich/blob/master/NEWS)
- [Commits](jelmer/dulwich@dulwich-0.22.3...dulwich-0.22.4)

---
updated-dependencies:
- dependency-name: dulwich
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>