[four-in-a-row] Bump Gtk+ required version.

[Arnaud B. <arnaudb src gnome org>]

commit 82d9bff8be4f243df39467f092b7b92008ccadeb
Author: Arnaud Bonatti <arnaud bonatti gmail com>
Date:   Fri Feb 14 06:02:40 2020 +0100

    Bump Gtk+ required version.
    
    As the show_uri_on_window() method
    is used since a long time, and the
    Gdk.WindowState.*_TILED enum flags
    since a bit less time, to 3.22.23.

 meson.build | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/meson.build b/meson.build
index ead17b4..6f0a77c 100644
--- a/meson.build
+++ b/meson.build
@@ -20,7 +20,7 @@ valac = meson.get_compiler('vala')
 gio_dependency      = dependency('gio-2.0',     version: '>= 2.40.0')
 glib_dependency     = dependency('glib-2.0',    version: '>= 2.40.0')
 gsound_dependency   = dependency('gsound',      version: '>= 1.0.2')
-gtk_dependency      = dependency('gtk+-3.0',    version: '>= 3.13.2')
+gtk_dependency      = dependency('gtk+-3.0',    version: '>= 3.22.23')
 posix_dependency    = valac.find_library('posix')
 rsvg_dependency     = dependency('librsvg-2.0', version: '>= 2.32.0')