chore(azure-preview-workflow): add timeout value

Author: cdransf

.github/workflows/publish-site.yml

@@ -109,6 +109,7 @@ jobs:
             const prNumber = context.payload.pull_request.number;
             const body = buildPreviewURLComment(prNumber);
             commentOrUpdate(github, context, '## 📚 Branch preview', body);
+        timeout-minutes: 10
 
   close_pull_request_job:
     if: github.event_name == 'pull_request' && github.event.action == 'closed'