chore(ci): add cherry pick for v1.7.0-standalone (#15359)

.github/workflows/cherry-pick-to-release-branch.yml

@@ -6,6 +6,22 @@ on:
     types: ["closed", "labeled"]
 
 jobs:
+  release_pull_request_1_7_standalone:
+    if: "contains(github.event.pull_request.labels.*.name, 'need-cherry-pick-release-1.7-standalone')  &&  github.event.pull_request.merged == true"
+    runs-on: ubuntu-latest
+    name: release_pull_request
+    steps:
+      - name: checkout
+        uses: actions/checkout@v1
+      - name: Create PR to branch
+        uses: risingwavelabs/github-action-cherry-pick@master
+        with:
+          pr_branch: 'release-1.7.0-standalone'
+          pr_labels: 'cherry-pick'
+          pr_body: ${{ format('Cherry picking \#{0} onto branch release-1.7.0-standalone', github.event.number) }}
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
   release_pull_request_1_7:
     if: "contains(github.event.pull_request.labels.*.name, 'need-cherry-pick-release-1.7')  &&  github.event.pull_request.merged == true"
     runs-on: ubuntu-latest