[five-or-more] snap: Add valac to build-packages

[Jeremy Bicha <jbicha src gnome org>]

commit 3d8b82ded8463b454d7fef9825638ae116136343
Author: Jeremy Bicha <jbicha ubuntu com>
Date:   Thu Feb 14 20:05:41 2019 -0500

    snap: Add valac to build-packages

 snap/snapcraft.yaml | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/snap/snapcraft.yaml b/snap/snapcraft.yaml
index bf090a7..b4406b5 100644
--- a/snap/snapcraft.yaml
+++ b/snap/snapcraft.yaml
@@ -86,5 +86,6 @@ parts:
       - libgnome-games-support-1-dev
       - libgtk-3-dev
       - librsvg2-dev
+      - valac
     stage-packages:
       - libgnome-games-support-1-3