chore: switch RL scanner back to reusable workflow

Author: tanya732

.github/workflows/rl-scanner.yml

@@ -27,10 +27,6 @@ on:
       PRODSEC_PYTHON_TOOLS_REPO:
         required: true
 
-permissions:
-  contents: write
-  id-token: write # This is required for requesting the JWT
-
 jobs:
   checkout-build-scan-only:
     if: github.event_name == 'push' || github.event_name == 'workflow_dispatch' || (github.event_name == 'pull_request' && github.event.pull_request.merged && startsWith(github.event.pull_request.head.ref, 'release/'))