UID2-7445: drop redundant cancel-in-progress comment

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

Author: swibi-ttd

.github/workflows/publish-shared-actions.yaml

@@ -12,7 +12,6 @@ permissions:
   contents: read
 
 # Serialize releases so two dispatches can't race the version compute.
-# cancel-in-progress false: never kill a release mid-flight (partial state).
 concurrency:
   group: publish-shared-actions
   cancel-in-progress: false