Merge pull request gitpython-developers#132 from gitpython-developers/dependabot/github_actions/actions/checkout-6

Bump actions/checkout from 5 to 6

Author: Byron

.github/workflows/pythonpackage.yml

@@ -25,7 +25,7 @@ jobs:
     continue-on-error: ${{ matrix.experimental }}
 
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
       with:
         fetch-depth: 0
     - name: Set up Python ${{ matrix.python-version }}