[gnome-characters/wip/jtojnar/gtk4] build: switch to gtk4-update-icon-cache

[Jan Tojnar <jtojnar src gnome org>]

commit b026bd06638c8218d4564e7b87704231b0a1f781
Author: Jan Tojnar <jtojnar gmail com>
Date:   Wed Feb 16 23:11:50 2022 +0000

    build: switch to gtk4-update-icon-cache
    
    The GTK 3 variant may not be available in build sandboxes.

 meson_post_install.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/meson_post_install.py b/meson_post_install.py
index 64c0ab0..1816f7e 100644
--- a/meson_post_install.py
+++ b/meson_post_install.py
@@ -22,7 +22,7 @@ if not os.environ.get('DESTDIR'):
     subprocess.call(['glib-compile-schemas', os.path.join(datadir, 'glib-2.0', 'schemas')])
 
     print('Updating icon cache...')
-    subprocess.call(['gtk-update-icon-cache', '-qtf', os.path.join(datadir, 'icons', 'hicolor')])
+    subprocess.call(['gtk4-update-icon-cache', '-qtf', os.path.join(datadir, 'icons', 'hicolor')])
 
     print('Updating desktop database...')
     subprocess.call(['update-desktop-database', '-q', os.path.join(datadir, 'applications')])