Upgrade of Zotero 6


I have installed Zotero 6.0.12 on Ubuntu using Snap. It works very well, but for several months now there has been a pop-up window requesting an update from zotero.com.

I ran the upgrade of snap, but the issue did not change.

Is there a newer version of 6.0.12 so I can finally upgrade Zotero? Or can I use the version on the Zotero website? if yes, how can I combine the snap version with the official one? Or, more simply, is there a way to switch of that annoying pop up?

Thank you