Potential fix for code scanning alert no. 371: Workflow does not contain permissions

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

Author: landreev

.github/workflows/deploy_to_internal.yml

@@ -8,6 +8,9 @@ on:
         type: string
         required: false
 
+permissions:
+  contents: read
+
 concurrency:
   group: deploy-to-internal
   cancel-in-progress: false