Bump gitpython from 3.1.40 to 3.1.42 in /extra_requirements

Bumps [gitpython](https://github.com/gitpython-developers/GitPython) from 3.1.40 to 3.1.42.
- [Release notes](https://github.com/gitpython-developers/GitPython/releases)
- [Changelog](https://github.com/gitpython-developers/GitPython/blob/main/CHANGES)
- [Commits](gitpython-developers/GitPython@3.1.40...3.1.42)

---
updated-dependencies:
- dependency-name: gitpython
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

extra_requirements/requirements-docs.txt

@@ -3,7 +3,7 @@ numpy==1.23.3
 autodocsumm==0.2.9
 scipy==1.9.1
 commonmark==0.9.1
-gitpython==3.1.40
+gitpython==3.1.42
 graphviz==0.20.1
 nbsphinx==0.9.3
 recommonmark==0.7.1