Bump the gh-actions group with 1 update

Bumps the gh-actions group with 1 update: [hmarr/auto-approve-action](https://github.com/hmarr/auto-approve-action).


Updates `hmarr/auto-approve-action` from 3.2.1 to 4.0.0
- [Release notes](https://github.com/hmarr/auto-approve-action/releases)
- [Commits](hmarr/auto-approve-action@v3.2.1...v4.0.0)

---
updated-dependencies:
- dependency-name: hmarr/auto-approve-action
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: gh-actions
...

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

.github/workflows/automerge-dependabot.yml

@@ -17,4 +17,4 @@ jobs:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
 
       - name: Approve
-        uses: hmarr/auto-approve-action@v3.2.1
+        uses: hmarr/auto-approve-action@v4.0.0