Bump hmarr/auto-approve-action from 3.2.1 to 4.0.0 (#187)

Bumps [hmarr/auto-approve-action](https://github.com/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
...

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

.github/workflows/automerge_dependabot.yml

@@ -42,7 +42,7 @@ jobs:
           echo "PR_NUMBER=$(cat pr_number)" >> "$GITHUB_ENV"
 
       - name: Approve
-        uses: hmarr/auto-approve-action@v3.2.1
+        uses: hmarr/auto-approve-action@v4.0.0
         with:
           github-token: "${{ secrets.GITHUB_TOKEN }}"
           pull-request-number: "${{ env.PR_NUMBER }}"