Mattermost and operator upgrade

Package Merge Request

Package Changes

Upgrade mattermost and mattermost-operator

Package MR

https://repo1.dso.mil/platform-one/big-bang/apps/collaboration-tools/mattermost-operator/-/merge_requests/39
https://repo1.dso.mil/platform-one/big-bang/apps/collaboration-tools/mattermost/-/merge_requests/90

For Issue

Closes https://repo1.dso.mil/platform-one/big-bang/apps/collaboration-tools/mattermost-operator/-/issues/18
Closes https://repo1.dso.mil/platform-one/big-bang/apps/collaboration-tools/mattermost/-/issues/47