Potential fix for code scanning alert no. 7: Workflow does not contain permissions (#16)

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

Author: hippieZhou

.github/workflows/deploy-pages.yml

@@ -308,6 +308,8 @@ jobs:
     needs: build-and-test
     runs-on: ubuntu-latest
     if: github.ref == 'refs/heads/main' && github.event_name == 'push'
+    permissions:
+      contents: read
 
     steps:
       - name: Download build artifacts