Bump pascalgn/automerge-action from 0.15.2 to 0.16.2 (#3279)

Bumps [pascalgn/automerge-action](https://github.com/pascalgn/automerge-action) from 0.15.2 to 0.16.2.
- [Release notes](https://github.com/pascalgn/automerge-action/releases)
- [Commits](pascalgn/automerge-action@v0.15.2...v0.16.2)

---
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>
Co-authored-by: Nicolas Vuillamy <[email protected]>

.github/workflows/automerge.yml

@@ -34,4 +34,4 @@ jobs:
           MERGE_COMMIT_MESSAGE: "pull-request-description"
           MERGE_FORKS: "false"
         if: env.GITHUB_TOKEN != null
-        uses: "pascalgn/automerge-action@v0.15.2"
+        uses: "pascalgn/automerge-action@v0.16.2"