update repository references and improve script handling

.github/workflows/onpr_automerge.old

@@ -0,0 +1,40 @@
+# yamllint disable rule:line-length
+# shellcheck disable=SC2043
+---
+name: automerge
+on:
+  pull_request_review:
+    types:
+      - submitted
+  issue_comment:
+    types: created
+  check_suite:
+    types:
+      - completed
+  status: {}
+jobs:
+  labeler:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Add the automerge label
+        if: ${{ github.event.issue.pull_request && contains(github.event.comment.body, '/automerge') }}
+        uses: actions/github-script@v4
+        with:
+          github-token: ${{secrets.GITHUB_TOKEN}}
+          script: |
+            github.issues.addLabels({
+              issue_number: context.issue.number,
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              labels: ['automerge']
+            })
+  automerge:
+    runs-on: ubuntu-latest
+    needs: [labeler]
+    steps:
+      - id: automerge
+        if: ${{ github.event.issue.pull_request }}
+        name: automerge
+        uses: "pascalgn/automerge-action@v0.16.2"
+        env:
+          GITHUB_TOKEN: "${{ secrets.GITHUB_TOKEN }}"