Bump gitpython from 3.1.59 to 3.1.60

Bumps [gitpython](https://github.com/gitpython-developers/GitPython) from 3.1.59 to 3.1.60.
- [Release notes](https://github.com/gitpython-developers/GitPython/releases)
- [Changelog](https://github.com/gitpython-developers/GitPython/blob/main/CHANGES)
- [Commits](gitpython-developers/GitPython@3.1.59...3.1.60)

---
updated-dependencies:
- dependency-name: gitpython
  dependency-version: 3.1.60
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

poetry.lock

@@ -18,7 +18,7 @@ python = "~3.14"
 black = "^26.5"
 codespell = "^2.4.3"
 flake8 = "^7.3.0"
-gitpython = "^3.1.59"
+gitpython = "^3.1.60"
 invoke = "^3.0.3"
 mdx_truly_sane_lists = "^1.3"
 mike = "^2.2.0"