main/py3-gobject3: upgrade to 3.46.0
Changelog:
3.46.0 - 2023-09-10
-------------------
* build: Drop Python 3.7 support :mr:`238`
* build: Require glib 2.64 and gobject-introspection 1.64 :mr:`243`
* Add support for Python 3.12 (minor test fixes) :mr:`247`
* Drop GTK 2 support (after being effectively unsupported for 12 years) :mr:`182`
* meson: Require meson 0.56.0 :mr:`220`
* meson: Set PYTHONPATH in devenv :mr:`235`
* meson: define pycairo_dep in case pycairo=disabled :mr:`242`
* meson: Use pycairo from target python before pkg-config :mr:`223`
* Complete the PEP-451 implementation in gi.importer :mr:`229`
* Replace usage of deprecated FFI closure API :mr:`241`
* Fix invalid marshalling in some cases for boxed values, for example with
Gtk.StyleContext.get_property() :mr:`213`
* Consistent setting of enum and flag property :mr:`192`
* Fix docstring for methods that return an array and have a length (out) argument :mr:`249`
* overrides: Fix incompatibility for CssProvider.load_from_data() (GTK 4.10) :mr:`231`
* overrides: Allow Gdk.{Color,RGBA} instances to be compared with other objects :mr:`233`
* overrides: Add overrides for Gdk.FileList in Gdk-4.0 :mr:`245`
* docs: Fix underline too short warning :mr:`246`
* docs: Fix build failure due to extlinks with Sphinx 6 :mr:`244`
* docs: List additional projects using PyGObject :mr:`230`
* docs: Update Development Environment Docs :mr:`232`
* docs: Update docs and code examples to GTK 4 :mr:`215`