ci: auto backport squashed commits based on labels (#26622) (#26640)

(cherry picked from commit 057a0a9842)

Co-authored-by: Ankush <ankush@iwebnotes.com>

.github/workflows/backport.yml

@@ -1,16 +1,25 @@
 name: Backport
 on:
-  pull_request:
+  pull_request_target:
     types:
       - closed
       - labeled
 
 jobs:
-  backport:
-    runs-on: ubuntu-18.04
-    name: Backport
+  main:
+    runs-on: ubuntu-latest
     steps:
-      - name: Backport
-        uses: tibdex/backport@v1
+      - name: Checkout Actions
+        uses: actions/checkout@v2
         with:
-          github_token: ${{ secrets.GITHUB_TOKEN }}
+          repository: "ankush/backport"
+          path: ./actions
+          ref: develop
+      - name: Install Actions
+        run: npm install --production --prefix ./actions
+      - name: Run backport
+        uses: ./actions/backport
+        with:
+          token: ${{secrets.BACKPORT_BOT_TOKEN}}
+          labelsToAdd: "backport"
+          title: "{{originalTitle}}"