Update sync-to-deployment-fork.yml

.github/workflows/sync-to-deployment-fork.yml

@@ -7,6 +7,13 @@ on:
   #  - cron: '*/30 * * * *' # every 30 minutes
   workflow_dispatch: # on button click
 
+env:
+  REQUEST_BODY: |
+    branch: 'main',
+    headers: {
+      'X-GitHub-Api-Version': '2022-11-28'
+    }
+
 jobs:
   sync-deployment-fork:
     runs-on: ubuntu-latest
@@ -15,6 +22,7 @@ jobs:
         id: sync_deployment_fork
         with:
           route: POST /repos/{owner}/{repo}/merge-upstream
+          body: ${{ toJSON(env.REQUEST_BODY) }}
           owner: JTC-Smart-Retrieval
           repo: Smart-Retrieval-Deployment
         env: