Nvidia likely will back port Debian 13 support to their driver if you ask nicely in an email to their Linux bugs email address, although you would probably wait 3 to 6 months for it. They periodically back port support for newer systems to older drivers that they maintain.

Alternatively, it is theoretically possible to forward port their driver yourself since their kernel compatibility shims are open source and you can see what changes they made in newer versions to support newer kernels. This is likely a masochistic exercise however.