um system upgrade

[Owen-sz]

A way to update the system version (not a standard dnf upgrade, but rather update the release version`. If possible, will need to verify there is a system version available before running the system version update commands.

We have a guide on doing this through the command line already:

https://wiki.ultramarine-linux.org/en/release/43-upgrades/#command-line

This, plus some logic/flags/etc. should be a part of a um system-version-upgrade or something.

[linear]

FYRA-449

[Owen-sz]

For consistency, we could also wrap topgrade https://github.com/topgrade-rs/topgrade as another update command to just update the current system