update automerge and autosquash workflows (github#15956)

* update automerge and autosquash workflows

* use the right action version

* try to use one workflow for autosquash and automerge

* Update .github/workflows/automerge.yml

Co-authored-by: James M. Greene <[email protected]>

Co-authored-by: James M. Greene <[email protected]>

.github/allowed-actions.js

@@ -23,7 +23,7 @@ module.exports = [
   'juliangruber/approve-pull-request-action@v1',
   'juliangruber/find-pull-request-action@v1',
   'juliangruber/read-file-action@v1',
-  'pascalgn/automerge-action@135f0bdb927d9807b5446f7ca9ecc2c51de03c4a',
+  'pascalgn/automerge-action@c9bd182',
   'peter-evans/create-issue-from-file@v2',
   'peter-evans/create-pull-request@v2',
   'rachmari/[email protected]',

.github/workflows/automerge.yml

@@ -20,18 +20,17 @@ on:
 jobs:
   automerge:
     runs-on: ubuntu-latest
-    if: contains(github.event.pull_request.labels.*.name, 'automerge')
+    if: contains(github.event.pull_request.labels.*.name, 'automerge') || contains(github.event.pull_request.labels.*.name, 'autosquash')
     steps:
       - name: automerge
-        uses: "pascalgn/automerge-action@135f0bdb927d9807b5446f7ca9ecc2c51de03c4a"
+        uses: "pascalgn/automerge-action@c9bd182"
         env:
           GITHUB_TOKEN: "${{ secrets.OCTOMERGER_PAT_WITH_REPO_AND_WORKFLOW_SCOPE }}"
-          MERGE_LABELS: "automerge"
-          MERGE_REMOVE_LABELS: ""
+          MERGE_METHOD_LABELS: "automerge=merge,autosquash=squash"
           MERGE_COMMIT_MESSAGE: "pull-request-title"
           MERGE_METHOD: "merge"
           MERGE_FORKS: "true"
           MERGE_RETRIES: "50"
-          MERGE_RETRY_SLEEP: "10000"
-          UPDATE_LABELS: "automerge"
+          MERGE_RETRY_SLEEP: "10000" # ten seconds
+          UPDATE_LABELS: "automerge,autosquash"
           UPDATE_METHOD: "merge"