build(deps): bump pascalgn/automerge-action from 0.15.5 to 0.15.6 (#36)

Bumps [pascalgn/automerge-action](https://github.com/pascalgn/automerge-action) from 0.15.5 to 0.15.6.
- [Release notes](https://github.com/pascalgn/automerge-action/releases)
- [Commits](pascalgn/automerge-action@v0.15.5...v0.15.6)

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

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

.github/workflows/automerge.yml

@@ -32,7 +32,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Merge pull requests
-        uses: pascalgn/[email protected].5
+        uses: pascalgn/[email protected].6
         env:
           GITHUB_TOKEN: "${{ secrets.GITHUB_TOKEN }}"
           MERGE_LABELS: "automerge,!work in progress"