add sleep for debugging

Author: cccclai

.github/workflows/_link_check.yml

@@ -67,6 +67,7 @@ jobs:
       ref: ${{ inputs.ref }}
       timeout: 30
       script: |
+        sleep 900
         ./scripts/lint_file_size.sh $(
           if [ "${{ github.event_name }}" = "pull_request" ]; then
             echo "${{ github.event.pull_request.base.sha }}" "${{ github.event.pull_request.head.sha }}"