Large performance boost on this new version.

It's probably best to undeploy and deploy from scratch when doing this upgrade
as a number of things env vars have totally changed with this LOOL -> COOL
migration in the new version.

There is also a new admin username/password to deal with in the config.

Read the blog post here for more background info:

    https://www.collaboraoffice.com/code-21-11-release-notes/