Bump gitpython from 3.1.34 to 3.1.35 (#31)

Bumps [gitpython](https://github.com/gitpython-developers/GitPython) from 3.1.34 to 3.1.35.
- [Release notes](https://github.com/gitpython-developers/GitPython/releases)
- [Changelog](https://github.com/gitpython-developers/GitPython/blob/main/CHANGES)
- [Commits](gitpython-developers/GitPython@3.1.34...3.1.35)

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

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requirements.txt

@@ -1,4 +1,4 @@
 sphinx==4.0.1
 sphinx-rtd-theme==0.5.2
-gitpython==3.1.34
+gitpython==3.1.35
 sphinxemoji