The following FAQ details what you will need for a matter device. In your case, since you have a V2 hub, if you get a device that uses matter over thread, you will also need a thread border router… that could be a smart thing station, but you might already have one, as several of the Amazon echo devices are thread border routers, and so are most of the Google nest home devices and Apple HomePod mini.
FAQ: What do I need to add a Matter device to the SmartThings app? Do I need a bridge router device?
All of that said, I haven’t heard of anyone actually using a matter lock with SmartThings yet, so I’m not sure if, for example, it supports all of the SmartThings guest lock access features or not. @Automated_House might know. 