Bug#967443: gnubg: depends on deprecated GTK 2

[Bastian Germann]

Am 14.10.23 um 21:41 schrieb Russ Allbery:

Upstream specifically says that the Gtk-3 support is buggy, does not work,
and should not be used.  How thoroughly did you test it?

I have played a round against the computer and have not seen a problem.