Upstream has released version 3.4.0 recently. https://netbox.dev/announcements/netbox-3.4.0-released/
A major change is dropping a version constrain on the depending package graphene_django < 3. https://github.com/netbox-community/netbox/commit/bbc68f948453801e44bea8b37702d5409a55c52e#diff-b8c805f9b40de096ba79f0019f8006e17731254bd521b29410a1c9574377b8d7 graphene_django is packaged in Debian by src:django-graphene, but currently there is only version 2.15.0-2 available in testing/unstable. I've looked at this package to get the recent version packaged but there is some work to do get this package updated to 3.0.0. Also the resulting binary package dependencies would need to get an coordinated upload to unstable. But as due the nature of the upstream NetBox package and it's quick and rapid development it would currently make less sense to try hard to get NetBox into bookworm, we can always provide recent version by backports. Currently I'll focus on get the Python related graphene packages updated for bookworm to there current upstream versions. Regards Carsten