Changes in repos for upcoming Debian 12
https://www.debian.org/releases/bookworm/amd64/release-notes/ch-whats-new.en.html#archive-areasQuote"Most non-free firmware packages have been moved from non-free to non-free-firmware in preparation for the Debian 12 release. This clean separation makes it possible to build official installation images with packages from main and from non-free-firmware, without contrib or non-free. In turn, these installation images make it possible to install systems with only main and non-free-firmware, without contrib or non-free."
On my Sparky7 Test rig, after adding non-free-firmware to Debian repos, fixed an issue for me when updating nvidia refer :
https://forum.sparkylinux.org/index.php?msg=17242