Bump pascalgn/automerge-action from 0.16.3 to 0.16.4 (#38)

Author: dependabot[bot]

.github/workflows/docker.yml

@@ -61,7 +61,7 @@ jobs:
           configuration-path: .github/auto_label.yml
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-      - uses: pascalgn/automerge-action@v0.16.3
+      - uses: pascalgn/automerge-action@v0.16.4
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
           MERGE_LABELS: "automerge,!WIP,!do-not-merge"