chore(deps): bump pascalgn/automerge-action from 0.16.2 to 0.16.3

Bumps [pascalgn/automerge-action](https://github.com/pascalgn/automerge-action) from 0.16.2 to 0.16.3.
- [Release notes](https://github.com/pascalgn/automerge-action/releases)
- [Commits](pascalgn/automerge-action@v0.16.2...v0.16.3)

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

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

.github/workflows/automerge.yml

@@ -15,7 +15,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Automatically merge branches labeled as `autoupdate`
-        uses: "pascalgn/automerge-action@v0.16.2"
+        uses: "pascalgn/automerge-action@v0.16.3"
         env:
           GITHUB_TOKEN: "${{ secrets.ELEVATED_GITHUB_TOKEN }}"
           MERGE_LABELS: "autoupdate"