Update dulwich requirement from ~=0.22.3 to ~=0.22.4 in /.dev

Updates the requirements on [dulwich](https://github.com/dulwich/dulwich) to permit the latest version.
- [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
...

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

.dev/requirements_dev.txt

@@ -1,4 +1,4 @@
-dulwich~=0.22.3
+dulwich~=0.22.4
 debugpy>=1.8.0
 fakeredis~=2.26
 httpx~=0.27.2