chore(deps): bump pascalgn/automerge-action from 0.15.6 to 0.16.4

Bumps [pascalgn/automerge-action](https://github.com/pascalgn/automerge-action) from 0.15.6 to 0.16.4.
- [Release notes](https://github.com/pascalgn/automerge-action/releases)
- [Commits](pascalgn/automerge-action@v0.15.6...v0.16.4)

---
updated-dependencies:
- dependency-name: pascalgn/automerge-action
  dependency-version: 0.16.4
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

.github/workflows/automerge.yml

@@ -13,7 +13,7 @@ jobs:
     steps:
       - id: automerge
         name: automerge
-        uses: "pascalgn/automerge-action@v0.15.6"
+        uses: "pascalgn/automerge-action@v0.16.4"
         if: github.actor != 'dependabot[bot]'
         env:
           GITHUB_TOKEN: "${{ secrets.GH_PA_TOKEN }}"