Bump gitpython from 3.1.54 to 3.1.57

Bumps [gitpython](https://github.com/gitpython-developers/GitPython) from 3.1.54 to 3.1.57.
- [Release notes](https://github.com/gitpython-developers/GitPython/releases)
- [Changelog](https://github.com/gitpython-developers/GitPython/blob/main/CHANGES)
- [Commits](gitpython-developers/GitPython@3.1.54...3.1.57)

---
updated-dependencies:
- dependency-name: gitpython
  dependency-version: 3.1.57
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

pyproject.toml

@@ -7,7 +7,7 @@ dependencies = [
     "click-aliases==1.0.7",
     "difflib-parser==2.1.1",
     "git-autograder==6.8.0",
-    "gitpython==3.1.54",
+    "gitpython==3.1.57",
     "librt==0.9.0",
     "pygments==2.20.0",
     "pytermgui==7.7.4",