Log Message:
ruby-gnome: update to 4.2.1.

Upstream changes:
 https://github.com/ruby-gnome/ruby-gnome/releases/tag/4.2.1

Ruby-GNOME 4.2.1: 2024-02-23

This is a minor bug fix release.

Changes

Ruby/GLib2

  * Improvements

      + Added support for showing GType name for anonymous GType
        based classes.
          o GH-1577
          o Reported by Sami Sieranoja

      + Added RG_DEF_SALIAS().

      + Stopped providing unusable signal related methods to not signal
        ready objects such as GLib::Instantiatable.
          o GH-1589
          o Reported by Sami Sieranoja

      + Added GLib::Type::INVALID. GLib::Type[nil] is also accepted.
          o GH-1594
          o Reported by Sami Sieranoja

      + Added GLib::TimeZone#identifier.

      + Added GLib::TimeZone.try_convert.

Ruby/GObjectIntrospection

  * Improvements

      + Ignored .hash(some_arguments) methods. It may break something.

      + Ignored fundamental GType.
          o GH-1580
          o Reported by Sami Sieranoja

      + Added support for returning sized GType array.

Ruby/GDK4

  * Fixes

      + Fixed a GC related bug of Gdk::MemoryTexture.new.
          o GH-1596
          o Reported by HuBandiT

      + Fixed a GC related bug of Gdk::Picture.
          o GH-1596
          o Reported by HuBandiT

Ruby/GTK4

  * Improvements

      + Added a menu bar sample.
          o GH-1581
          o GH-1582
          o GH-1584
          o Patch by Sami Sieranoja

      + Added support for Gtk::DropTarget.new([type, ...], actions).
          o GH-1594
          o Reported by Sami Sieranoja

  * Fixes

      + Fixed deprecation message of Gtk::Button.new.
          o GH-1587
          o Reported by Sami Sieranoja

      + Fixed a GC related bug of Gtk::Image.

      + Fixed a GC related bug of Gtk::ColumnView.
          o GH-1600
          o Reported by HuBandiT

      + Fixed a GC related bug of Gtk::SingleSelection.
          o GH-1600
          o Reported by HuBandiT

Ruby/GStreamer

  * Improvements

      + Added a missing GC guard for Gst::Element#bus.
          o GH-1586
          o Reported by Sami Sieranoja

Thanks

  * Sami Sieranoja
  * HuBandiT