Log Message:
gupnp12: update to 1.2.2.

1.2.2
=====
- Fix macOS dylib versioning
- Fix endless loop on early notify
- Several documentation fixes
- Implement version-independent type registration in ResourceFactory
- Fix an issue with implementation of the depracted functions
- Fix an issue with including net/if.h and linux/if.h
- Add async introspection functions matching the usual GIO function pattern
- Go through main loop if introspection fails before the actual network request
- Bump required GLib version to 2.58

Bugs fixed in this release:
 - https://bugzilla.gnome.org/show_bug.cgi?id=764498
 - https://gitlab.gnome.org/GNOME/gupnp/issues/5
 - https://gitlab.gnome.org/GNOME/gupnp/issues/6
 - https://gitlab.gnome.org/GNOME/gupnp/issues/8