2.9.5 should not be available to download due to it being broken.

sudo apt install linuxcnc-uspace=1:2.9.6 linuxcnc-uspace-dev=1:2.9.6
Solving dependencies... Error!  
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

Unsatisfied dependencies:
 linuxcnc-uspace : Depends: python3 (< 3.12) but 3.13.5-1 is to be installed
                   Depends: libboost-python1.74.0 (>= 1.74.0+ds1) but it is not installable
                   Depends: libboost-python1.74.0-py311 but it is not installable
                   Depends: libgpiod2 (>= 1.5.1) but it is not installable
                   Depends: libpython3.11 (>= 3.11.0) but it is not installable
                   Recommends: hostmot2-firmware-all but it is not installable
Error: Unable to correct problems, you have held broken packages.
Error: The following information from --solver 3.0 may provide additional context:
   Unable to satisfy dependencies. Reached two conflicting decisions:
   1. linuxcnc-uspace:arm64=1:2.9.6 is selected as an upgrade
   2. linuxcnc-uspace:arm64=1:2.9.6 Depends python3 (< 3.12)
      but none of the choices are installable:
      [no choices]