Bug#1122280: fenics-ffcx FTBFS with Graphviz 14+

[Drew Parsons]

Source: fenics-ffcx
Followup-For: Bug #1122280
Control: tags -1 ftbfs
Control: reassign -1 python-pygraphviz
Control: affects -1 src:fenics-ffcx

As far as I can see this patch for fenics-ffcx is not the correct
solution. ffcx does not use libgvplugin, it uses pygraphviz.

It looks like this bug should be transferred to python3-pygraphviz
which should add the Depends that it needs.