Bug#1099164: pygobject: Don't include 3.51 with trixie

[Simon McVittie]

On Sun, 23 Mar 2025 at 16:38:19 -0400, Jeremy Bícha wrote:
>Someone tried pygobject 3.51.0-1 and complained that ibus-anthy
>stopped working correctly for them at https://bugs.debian.org/1099192

I can (now) explain this: we patch libgirepository-1.0 to search the 
legacy non-multiarch typelib directory, but until yesterday, we weren't 
patching libgirepository-2.0 to match. The same issue caused isenkram's 
autopkgtest failure.

     smcv