Add an empty line

Co-authored-by: Hugo van Kemenade <1324225+hugovk@users.noreply.github.com>

Author: ambv

.github/workflows/require-pr-label.yml

@@ -23,6 +23,7 @@ jobs:
           count: 0
           labels: |
             DO-NOT-MERGE
+
   label-reviews:
     name: Unresolved review
     if: github.repository_owner == 'python'