Update Mattermost to 3.5.2 for 8.15 and below
Update Mattermost to version 3.5.2 for 8.15 and below. Includes serious security patch.
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
Update Mattermost to version 3.5.2 for 8.15 and below. Includes serious security patch.