[gnome-build-meta] sdk/librsvg.bst: add missing dep on cairo

[Jordan Petridis <jpetridis src gnome org>]

commit 863bbc4e5ead24e18fdca1ff2d57a0416c5cacbd
Author: Jordan Petridis <jordan centricular com>
Date:   Sun Nov 25 14:49:42 2018 +0200

    sdk/librsvg.bst: add missing dep on cairo
    
    I guess till now that was pulled as a transient dependency,
    but librsvg for the time being hard depends on cario
    and should be specified.

 elements/sdk/librsvg.bst | 2 ++
 1 file changed, 2 insertions(+)
---
diff --git a/elements/sdk/librsvg.bst b/elements/sdk/librsvg.bst
index 50996bf..4a4cf5a 100644
--- a/elements/sdk/librsvg.bst
+++ b/elements/sdk/librsvg.bst
@@ -311,6 +311,8 @@ depends:
 - sdk/pango.bst
 - filename: sdk/vala.bst
   type: build
+- filename: desktop/cairo.bst
+  junction: freedesktop-sdk.bst
 - filename: extensions/rust/cargo.bst
   junction: freedesktop-sdk.bst
   type: build