Revert "[CI] Allow wikigen stage to fail, to deploy toulouse API."

This reverts commit d9a67e00

.gitlab-ci.yml

@@ -29,7 +29,6 @@ validate-data:
 wikigen:
   extends: .test-for-bullseye
   stage: validate
-  allow_failure: true
   parallel:
     matrix:
       - GENERATOR: [cpu_parameters, disk_reservation, environments, group_storage, hardware, kwollect_metrics, oar_properties, status]