chore(github-action): update create-PRs permissions to allow PR creation

Currently, we have a failure when we try to create a PR associated to release 1.30
Current error: "pull request create failed: GraphQL: Resource not accessible by integration (createPullRequest)"

Author: o-orand

.github/workflows/create-PRs.yml

@@ -2,6 +2,7 @@ name: create-PRs-based-on-release-branches
 
 permissions:
   contents: write # allow git push to repo and the github release and its artefact
+  pull-requests: write
 
 on:
   workflow_dispatch: