Merge branch '348764-fix-iterations_in_advance-mismatch-between-backend-and-frontend' into 'master'

Removed 12 as an option for iteration cadences

See merge request gitlab-org/gitlab!78611

ee/app/assets/javascripts/iterations/components/iteration_cadence_form.vue

@@ -70,7 +70,6 @@ export default {
     6,
     8,
     10,
-    12,
   ],
 
   components: {