pygobject freeze break request

[Christoph Reiter <reiter christoph gmail com>]

Hey,

(re feature freeze)

pygobject recently got two MRs for covering some more cairo type conversions
with pycairo:

* https://gitlab.gnome.org/GNOME/pygobject/merge_requests/111
* https://gitlab.gnome.org/GNOME/pygobject/merge_requests/112

The changes come with tests and they only add support for binding API which
would previously error out, so this is unlikely to break anything.

Thanks!