gtk3 test: use gdk3-no-gi for tests.
gtk3 test: use gdk3-no-gi for tests.

This is workaround. Currently, tests for gtk3 depends gdk3-no-gi.

kitachro/ruby-gnome2,kitachro/ruby-gnome2,kitachro/ruby-gnome2,kitachro/ruby-gnome2,kitachro/ruby-gnome2