Bump gitpython from 3.1.35 to 3.1.37 in /envs (#67)

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
...

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envs/requirements.txt

@@ -35,7 +35,7 @@ f90nml==1.4.3
 filelock==3.8.1
 future==0.18.3
 gitdb==4.0.10
-GitPython==3.1.35
+GitPython==3.1.37
 h11==0.14.0
 h2==4.1.0
 hatch==1.6.3