fix: enable automated pr to main (ratify-project#1582)

Signed-off-by: Susan Shi <[email protected]>

.github/workflows/pr-to-main.yml

@@ -1,16 +1,15 @@
 name: pr_to_main
 
 on:
-  push:
-    branches:
-      - 'dev'
+  schedule:
+    - cron: '30 8 * * 0'  # early morning (08:30 UTC) every Sunday
+  workflow_dispatch:
 
 permissions:
   pull-requests: write
 
 jobs:
-  main:
-    name: Create PR Release to Main
+  pull-request:
     runs-on: ubuntu-latest
     steps:
       - name: Harden Runner
@@ -20,13 +19,13 @@ jobs:
 
       - name: git checkout
         uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332
-
-      # https://github.com/marketplace/actions/github-pull-request-action
+      - name: Get current date
+        id: date
+        run: echo "::set-output name=date::$(date +'%Y-%m-%d')"
       - name: create pull request with reposync action
         id: open-pr
         uses: repo-sync/pull-request@7e79a9f5dc3ad0ce53138f01df2fad14a04831c5 #v2.12.1
         with:
-          github_token: ${{ secrets.PR_TOKEN }}
           destination_branch: main
-          pr_title: ${{ github.event.commits[0].message }}
-          pr_body: "Automated Pull Request"
+          pr_title: "chore: automated PR to main ${{ steps.date.outputs.date }}"
+          pr_body: "Automated Pull Request to main branch"