Potential fix for code scanning alert no. 1: Workflow does not contain permissions

Co-authored-by: Copilot Autofix powered by AI <62310815+github-advanced-security[bot]@users.noreply.github.com>

Author: Wbaker7702

.github/workflows/ci-pull-request.yml

@@ -7,6 +7,8 @@ jobs:
   notify:
     if: ${{ !startsWith(github.head_ref, 'l10n_version/') }}
     runs-on: ubuntu-latest
+    permissions:
+      contents: read
 
     steps:
       - uses: actions/checkout@v3