enforce a no warn or error threshold on the CI for antora building.

gpx1000 · gpx1000 · commit 7a787d0ea0f1 · 2026-01-13T09:55:43.000-08:00
diff --git a/antora-ci-playbook.yml b/antora-ci-playbook.yml
@@ -12,3 +12,6 @@ content:
 ui:
   bundle:
     url: ui-bundle.zip
+runtime:
+  log:
+    failure_level: warn
