Grant write permissions to Github Action bot to fix 403 HTTP permission denied error

Author: Osaron

.github/workflows/auto-merge.yml

@@ -8,6 +8,8 @@ on:
 jobs:
   verify-and-merge:
     runs-on: ubuntu-latest
+    permissions:
+      contents: write
     steps:
       - name: Checkout Repository
         uses: actions/checkout@v4