Bump gitpython in /ai/gen-ai-agents/assistant-secretary-agent/files

Bumps [gitpython](https://github.com/gitpython-developers/GitPython) from 3.1.43 to 3.1.50.
- [Release notes](https://github.com/gitpython-developers/GitPython/releases)
- [Changelog](https://github.com/gitpython-developers/GitPython/blob/main/CHANGES)
- [Commits](gitpython-developers/GitPython@3.1.43...3.1.50)

---
updated-dependencies:
- dependency-name: gitpython
  dependency-version: 3.1.50
  dependency-type: direct:production
...

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

Author: dependabot[bot]

ai/gen-ai-agents/assistant-secretary-agent/files/local_requirements.txt

@@ -19,7 +19,7 @@ decorator==5.1.1
 executing==2.2.0
 frozenlist==1.5.0
 gitdb==4.0.11
-GitPython==3.1.43
+GitPython==3.1.50
 h11==0.16.0
 httpcore==1.0.7
 httpx==0.28.1