[gnome-builder/wip/gtk4-port] build: bump GLib requirements

[Christian Hergert <chergert src gnome org>]

commit c9bd9822e3b5aa3358b89aab3e32e938dd858346
Author: Christian Hergert <chergert redhat com>
Date:   Fri Jun 3 10:14:24 2022 -0700

    build: bump GLib requirements
    
    So we can start using some features we've pushed into GLib.

 meson.build | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/meson.build b/meson.build
index 50de9a847..e7091838b 100644
--- a/meson.build
+++ b/meson.build
@@ -22,7 +22,7 @@ pkggirdir = join_paths(get_option('datadir'),'gnome-builder', 'gir-1.0')
 pkgtypelibdir = join_paths(get_option('libdir'), 'gnome-builder', 'girepository-1.0')
 
 # Check dependencies
-glib_req_version = '2.70.0'
+glib_req_version = '2.71'
 gtk_req_version = '4.7'
 gtksourceview_req_version = '5.5'
 libadwaita_req_version = '1.2.alpha'