Operating Systems Cleanup

[micbar]

Description

Clarify if the existing list is suitable.

@dragotin was in favour of a more generic requirements list.

[mmattel]

Here is the link to the current OS supported: https://doc.owncloud.com/ocis/next/prerequisites/prerequisites.html#supported-operating-systems

Let the docs-team know if there are any changes

[micbar]

@mmattel we certainly need to add the new stable distros like Ubuntu 24.04