Update post-merge.yaml (#139)

Author: PalashGoelIntel

.github/workflows/post-merge.yaml

@@ -4,11 +4,6 @@
 
 name: Post-Merge CI Pipeline
 
-permissions:
-  contents: read
-  security-events: write
-  id-token: write
-
 on:
   push:
     branches:
@@ -18,6 +13,10 @@ on:
 
 jobs:
   post-merge:
+    permissions:
+      contents: read
+      security-events: write
+      id-token: write
     uses: open-edge-platform/orch-ci/.github/workflows/post-merge.yml@76700c2fb6d547733b9218d9638dca43f5296399  # 0.1.52
     with:
       run_version_tag: true