Update omnibus sha
Update after https://dev.gitlab.org/gitlab/omnibus/merge_requests/3.
Pipeline running at https://dev.gitlab.org/gitlab/omnibus-gitlab/pipelines/54468
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
Update after https://dev.gitlab.org/gitlab/omnibus/merge_requests/3.
Pipeline running at https://dev.gitlab.org/gitlab/omnibus-gitlab/pipelines/54468