SKIP UPGRADE CHECK: mattermost update to 9.11.1-bb.0

Package Merge Request

Package Changes

https://repo1.dso.mil/big-bang/product/packages/mattermost/-/blob/9.11.1-bb.0/CHANGELOG.md

Package MR

big-bang/product/packages/mattermost!264 (merged)

For Issue

Closes big-bang/product/packages/mattermost#166 (closed)

Upgrade Notices

When using the builtin bitnami postgresql server module (which is not a supported configuration outside of development environments), upgrading causes fatal error (postgres v15 > v16).

Database files are incompatible with server.

The data directory was initialized by PostgreSQL version 15, which is not compatible with this version 16.2.

When deploying this upgrade to installations using the builtin bitnami postgresql server, you must delete your postgresql pods and storage and recreate them manually.