Bump pascalgn/automerge-action from 0.15.3 to 0.15.5

Bumps [pascalgn/automerge-action](https://github.com/pascalgn/automerge-action) from 0.15.3 to 0.15.5.
- [Release notes](https://github.com/pascalgn/automerge-action/releases)
- [Commits](pascalgn/automerge-action@v0.15.3...v0.15.5)

---
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>

Author: dependabot[bot]

.github/workflows/auto-merge.yml

@@ -16,7 +16,7 @@ jobs:
       github.actor == 'renovate'
     steps:
       - name: automerge
-        uses: pascalgn/automerge-action@v0.15.3
+        uses: pascalgn/automerge-action@v0.15.5
         env:
           GITHUB_TOKEN: ${{ secrets.PAT_TOKEN }}
           MERGE_METHOD: "rebase"