Bump stefanzweifel/git-auto-commit-action from 5 to 6 (#834)

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] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/svgo.yml

@@ -23,7 +23,7 @@ jobs:
           repo-token: ${{secrets.GITHUB_TOKEN}}
           svgo-config: .github/workflows/svgo.config.js
       - name: Commit optimizations
-        uses: stefanzweifel/git-auto-commit-action@v5
+        uses: stefanzweifel/git-auto-commit-action@v6
         if: ${{steps.svgo.outputs.DID_OPTIMIZE}}
         with:
           commit_message: Optimize ${{steps.svgo.outputs.OPTIMIZED_COUNT}} SVG(s) # yamllint disable-line rule:line-length