Change login info in Screen Sharing recents list Running Big Sur 11.2.1 on my laptop, I have a Mac Mini I connect to via Screen Sharing -- it is in the Recents list.  However, the Mini's login changed, and I can't update it:

Changing it when logging in doesn't do it (it works for that login, but next time it reverts to the old values).
I've looked at the .vncloc file in ~/Library/Containers/com.apple.ScreenSharing/Data/Library/Application Support/Screen Sharing but there's nothing in there about login info.
I've deleted the .vncloc file, but when I enter the address of the mini (it's at a fixed IP), it presents me with the old credentials again.

Thanks in advance.
Credentials are stored in your keychain, which you can browse using Keychain Access.app in the Utilities folder of Applications.
Search for items named the hostname (or IP) of the device and delete the relevant password item.