fix: update permissions in CI workflow to allow write access for pull requests and contents

Author: bjohansebas

.github/workflows/update-snapshots.yml

@@ -13,7 +13,8 @@ concurrency:
   group: "${{ github.workflow }} ✨ ${{ github.event.pull_request.head.label || github.head_ref || github.ref }}"
   cancel-in-progress: true
 permissions:
-  contents: read
+    pull-requests: write
+    contents: write
 
 jobs:
   test: