Update group for banner feature flags

ee/config/feature_flags/development/subscribable_license_banner.yml

@@ -4,5 +4,5 @@ introduced_by_url: https://gitlab.com/gitlab-org/gitlab/-/merge_requests/30304
 rollout_issue_url: https://gitlab.com/gitlab-org/gitlab/-/issues/215950
 milestone: '13.0'
 type: development
-group: group::retention
+group: group::utilization
 default_enabled: true

ee/config/feature_flags/development/subscribable_subscription_banner.yml

@@ -4,5 +4,5 @@ introduced_by_url: https://gitlab.com/gitlab-org/gitlab/-/merge_requests/31497
 rollout_issue_url: https://gitlab.com/gitlab-org/gitlab/-/issues/230858
 milestone: '13.1'
 type: development
-group: group::retention
+group: group::utilization
 default_enabled: false