Bump gitpython from 3.1.35 to 3.1.37 in /llvm/utils/git

Bumps [gitpython](https://github.com/gitpython-developers/GitPython) from 3.1.35 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@3.1.35...3.1.37)

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

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

Author: dependabot[bot]

llvm/utils/git/requirements.txt

@@ -20,7 +20,7 @@ deprecated==1.2.13
     # via pygithub
 gitdb==4.0.9
     # via gitpython
-gitpython==3.1.35
+gitpython==3.1.37
     # via -r requirements.txt.in
 idna==3.4
     # via requests