Use ui-bundle v0.1.1

antora-playbook.yml

@@ -39,5 +39,5 @@ urls:
   redirect_facility: httpd
 ui:
   bundle:
-    url: https://github.com/spring-io/antora-ui-spring/releases/download/latest/ui-bundle.zip
+    url: https://github.com/spring-io/antora-ui-spring/releases/download/v0.1.1/ui-bundle.zip
     snapshot: true

lib/antora/templates/per-branch-antora-playbook.yml

@@ -31,5 +31,5 @@ urls:
   latest_version_segment: ''
 ui:
   bundle:
-    url: https://github.com/spring-io/antora-ui-spring/releases/download/latest/ui-bundle.zip
+    url: https://github.com/spring-io/antora-ui-spring/releases/download/v0.1.1/ui-bundle.zip
     snapshot: true