[gnome-build-meta/mutter-dep] Add Graphene as a dependency for Mutter

[Emmanuele Bassi <ebassi src gnome org>]

commit 7c0189bc87e3952a6eab5bd5a6625f9907d9b3dc
Author: Emmanuele Bassi <ebassi gnome org>
Date:   Wed Oct 16 16:41:34 2019 +0100

    Add Graphene as a dependency for Mutter
    
    Mutter gained a new dependency.

 elements/core/mutter.bst | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/elements/core/mutter.bst b/elements/core/mutter.bst
index eb69c38d..d8f3ea0e 100644
--- a/elements/core/mutter.bst
+++ b/elements/core/mutter.bst
@@ -16,6 +16,7 @@ depends:
 - sdk/gdk-pixbuf.bst
 - sdk/glib.bst
 - sdk/gobject-introspection.bst
+- sdk/graphene.bst
 - sdk/gsettings-desktop-schemas.bst
 - sdk/gtk+-3.bst
 - sdk/json-glib.bst