

Haha this was my first thought too.
Immich is very clear: “⚠️ Do not use the app as the only way to store your photos and videos.”
In that case, you have your content elsewhere. Make a backup of relevant volumes and a database dump (for your albums and such) and then try updating. Roll back if it doesn’t work. If if you don’t have much in the way of Immich meta data, and the upgrade didn’t work, then you could just start from scratch and re-import your content.
I treat Immich like a frontend. I have photos in Nextcloud, plus local and remote backup (1 2 3 style). Then Immich is set to absorb the photos from Nextcloud, and the photos are exposed read-only to Immich so it can’t damage anything.