You can click the "Advanced" button, then make sure that "Download new updates when available" is unchecked - and only "Check for updates" and "Install system data files and security updates" is checked. That will prevent Ventura from downloading to your Applications folder, until YOU want to download it.
The "Another Update is available" is probably either a security update for your Monterey, or an update to Safari app. Neither would imply updating to Ventura, if you don't want that yet.