ci: update allowed-conclusions of auto-merge workflow

Author: mato533

.github/workflows/update.yml

@@ -34,7 +34,7 @@ jobs:
           repo-token: ${{ secrets.GITHUB_TOKEN }}
           wait-interval: 30 # seconds
           running-workflow-name: dependencies # wait for all checks except this one
-          allowed-conclusions: success,skipped,cancelled # all other checks must pass, being skipped or cancelled is not sufficient
+          allowed-conclusions: success,skipped,cancelled,neutral # all other checks must pass, being skipped or cancelled is not sufficient
 
       - name: Auto-merge dependabot PRs
         # Don't merge updates to GitHub Actions versions automatically.