[CE] Group bulk edit issues/mrs/epics - change label
What does this MR do?
https://gitlab.com/gitlab-org/gitlab-ee/issues/7250
Adds support for bulk updating labels on issues, MRs and epics at a group level.
Original EE MR: https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/14827
Edited by Eugenia Grieff