Build(deps): Bump pascalgn/automerge-action from 0.15.3 to 0.16.4 (#5056

)

Bumps [pascalgn/automerge-action](https://github.com/pascalgn/automerge-action) from 0.15.3 to 0.16.4.
- [Release notes](https://github.com/pascalgn/automerge-action/releases)
- [Commits](pascalgn/automerge-action@v0.15.3...v0.16.4)

---
updated-dependencies:
- dependency-name: pascalgn/automerge-action
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

.github/workflows/automerge.yml

@@ -23,7 +23,7 @@ jobs:
     steps:
       - id: automerge
         name: automerge
-        uses: "pascalgn/automerge-action@v0.15.3"
+        uses: "pascalgn/automerge-action@v0.16.4"
         env:
           GITHUB_TOKEN: "${{ secrets.GITHUB_TOKEN }}"
           MERGE_REMOVE_LABELS: ""