Bump gitpython from 3.1.17 to 3.1.37

Bumps [gitpython](https://github.com/gitpython-developers/GitPython) from 3.1.17 to 3.1.37.
- [Release notes](https://github.com/gitpython-developers/GitPython/releases)
- [Changelog](https://github.com/gitpython-developers/GitPython/blob/main/CHANGES)
- [Commits](gitpython-developers/GitPython@3.1.17...3.1.37)

---
updated-dependencies:
- dependency-name: gitpython
  dependency-type: direct:production
...

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

requirements-update.txt

@@ -1,2 +1,2 @@
 httpx==0.18.1
-GitPython==3.1.17
+GitPython==3.1.37