Mac OS Ventura 13.6 not correct detected?

[gaffling]

https://www.whatismybrowser.com/detect/what-is-my-user-agent/

say my user_agent is:

Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/117.0.0.0 Safari/537.36

and your Script says: MacOS Big Sur

any Ideas? Thanks a lot

PS: I run Mac OS Ventura 13.6 for sure!