[gnome-control-center] project: Build GTK+ version in Meson too

[Georges Basile Stavracas Neto <gbsneto src gnome org>]

commit 578185a86e980602ed32176018810a3a70d4b645
Author: Georges Basile Stavracas Neto <georges stavracas gmail com>
Date:   Thu Jan 18 00:03:32 2018 -0200

    project: Build GTK+ version in Meson too
    
    To synchronize with the Autotools counterpart, which had
    the GTK+ version bumped in order to support unsetting emojis
    on the search bar.

 meson.build |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/meson.build b/meson.build
index 550ebf2..6572844 100644
--- a/meson.build
+++ b/meson.build
@@ -121,7 +121,7 @@ common_deps = [
   gsettings_desktop_dep,
   dependency('gio-unix-2.0'),
   dependency('gthread-2.0'),
-  dependency('gtk+-3.0', version: '>= 3.22.0')
+  dependency('gtk+-3.0', version: '>= 3.22.20')
 ]
 
 # Check for CUPS 1.4 or newer