Hi,
it seems the change in 24.4.24-3 of overtaking 2to3 from 2to3 package
was not done grafefully.

(Reading database… 634295 files and directories currently installed.)
Preparing to unpack …/python3-fissix_24.4.24-4_all.deb…
Unpacking python3-fissix (24.4.24-4)…
dpkg: error processing archive /var/cache/apt/archives/python3-fissix_24.4.24-4_all.deb (--unpack):
 trying to overwrite '/usr/bin/2to3', which is also in package 2to3 (3.13.2-1)