Update Mattermost to 6.4.1
Package Merge Request
Package Changes
Updated to latest 6.4.1 image for MM.
Package MR
https://repo1.dso.mil/platform-one/big-bang/apps/collaboration-tools/mattermost/-/merge_requests/86
For Issue
Closes https://repo1.dso.mil/platform-one/big-bang/apps/collaboration-tools/mattermost/-/issues/46