Bump stefanzweifel/git-auto-commit-action from 5 to 6

Bumps [stefanzweifel/git-auto-commit-action](https://github.com/stefanzweifel/git-auto-commit-action) from 5 to 6.
- [Release notes](https://github.com/stefanzweifel/git-auto-commit-action/releases)
- [Changelog](https://github.com/stefanzweifel/git-auto-commit-action/blob/master/CHANGELOG.md)
- [Commits](https://github.com/stefanzweifel/git-auto-commit-action/compare/v5...v6)

---
updated-dependencies:
- dependency-name: stefanzweifel/git-auto-commit-action
  dependency-version: '6'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

.github/workflows/align-versions.yml

@@ -47,6 +47,6 @@ jobs:
 
       - run: uv run ${{ matrix.job.script }}
 
-      - uses: stefanzweifel/git-auto-commit-action@v5
+      - uses: stefanzweifel/git-auto-commit-action@v6
         with:
           commit_message: Align versions

.github/workflows/dependabot-uv-lock.yml

@@ -28,6 +28,6 @@ jobs:
 
       - uses: astral-sh/setup-uv@v6
       - run: uv lock
-      - uses: stefanzweifel/git-auto-commit-action@v5
+      - uses: stefanzweifel/git-auto-commit-action@v6
         with:
           commit_message: Regenerate uv.lock

.github/workflows/update-contributors.yml

@@ -26,7 +26,7 @@ jobs:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
 
       - name: Commit changes
-        uses: stefanzweifel/git-auto-commit-action@v5.0.1
+        uses: stefanzweifel/git-auto-commit-action@v6
         with:
           commit_message: Update Contributors
           file_pattern: CONTRIBUTORS.md .github/contributors.json