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](stefanzweifel/git-auto-commit-action@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>

Author: dependabot[bot]

.github/workflows/update-tfdocs.yml

@@ -68,7 +68,7 @@ jobs:
         run: ./.github/scripts/update-tfdocs.sh "${{ env.current_version }}" "${{ env.release_version }}" "${{ env.checksum }}"
 
       - name: Push terraform-docs v${{ inputs.release_version }} Changes
-        uses: stefanzweifel/git-auto-commit-action@v5
+        uses: stefanzweifel/git-auto-commit-action@v6
         env:
           GITHUB_TOKEN: ${{ secrets.COMMITTER_TOKEN }}
         with: