[Linux Mint 22.2] Vivaldi on Software Manager is out-of-date (8.0.4033.26-1)

The latest version on Software Manager is in the title, but the website lists 8.1 (4087.64) as the most recent for desktop. And I don't really know why the version on Software Manager has an outdated version or why it hasn't been updated, which is what I'm trying to figure out making this post. What exactly is going on with it?