Bump gitpython from 3.1.37 to 3.1.40

Bumps [gitpython](https://github.com/gitpython-developers/GitPython) from 3.1.37 to 3.1.40.
- [Release notes](https://github.com/gitpython-developers/GitPython/releases)
- [Changelog](https://github.com/gitpython-developers/GitPython/blob/main/CHANGES)
- [Commits](gitpython-developers/GitPython@3.1.37...3.1.40)

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

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

requirements.txt

@@ -13,7 +13,7 @@ feedparser==6.0.10
 ffmpeg-python==0.2.0
 future==0.18.3
 git+https://github.com/python-telegram-bot/ptbcontrib.git
-gitpython==3.1.37
+gitpython==3.1.40
 markdown2==2.4.10
 multicolorcaptcha==1.2.0
 pillow==9.4.0