Bug#1029979: pyglossary: re-enable build test

[Jeremy Bicha]

Source: pyglossary
Version: 4.5.0-2

Please re-enable the build test for pyglossary.

I think the test will work again if you add these to Build-Depends
               python3-gi <!nocheck>,
               gir1.2-gtk-3.0 <!nocheck>,

Thank you,
Jeremy Bicha