Merge branch '441511-flaky-spec' into 'master'

Repair flakiness of bulk_user_assignment_spec's array matcher

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/157797



Merged-by: Etienne Baqué <ebaque@gitlab.com>
Approved-by: Paulo Barros <pbarros@gitlab.com>
Approved-by: Etienne Baqué <ebaque@gitlab.com>
Reviewed-by: Paulo Barros <pbarros@gitlab.com>
Co-authored-by: Divya <dmahadevan@gitlab.com>