It should only display once when Opera starts after an update. It shouldn't be displaying on every launch. If it is, it's likely Opera is not updating correctly. What version does it say you have at the URLs opera://about and opera://version? 133.0.5932.81 is the latest is this very moment.
Now, if you don't want to see it at all, even after an update, see https://www.reddit.com/r/OperaGX/comments/1b24otz/comment/ksql4ix/ for my extension that blocks the page and auto-closes that tab.