Update milestone for use_traversal_ids flag

config/feature_flags/development/use_traversal_ids.yml

@@ -2,7 +2,7 @@
 name: use_traversal_ids
 introduced_by_url: https://gitlab.com/gitlab-org/gitlab/-/merge_requests/56296
 rollout_issue_url: https://gitlab.com/gitlab-org/gitlab/-/issues/321948
-milestone: '13.10'
+milestone: '13.11'
 type: development
 group: group::access
 default_enabled: false