Bump stefanzweifel/git-auto-commit-action from 6 to 7 (#1258)

Bumps [stefanzweifel/git-auto-commit-action](https://github.com/stefanzweifel/git-auto-commit-action) from 6 to 7.
- [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@v6...v7)

---
updated-dependencies:
- dependency-name: stefanzweifel/git-auto-commit-action
  dependency-version: '7'
  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/readme-updater.yml

@@ -21,7 +21,7 @@ jobs:
     - name: "Replace GIT_TAG"
       run: sed -i -re 's/(GIT_TAG) [0-9a-f]+/\1 ${{github.sha}}/' README.md
     - name: "Commit changes"
-      uses: stefanzweifel/git-auto-commit-action@v6
+      uses: stefanzweifel/git-auto-commit-action@v7
       with:
         commit_message: ${{env.COMMIT_MESSAGE}}
         branch: ${{env.OUTPUT_BRANCH}}