[gnome-build-meta/alatiera/3-30-15] freedesktop-sdk.bst: Update to .15

[Jordan Petridis <jpetridis src gnome org>]

commit d191a424a6ff140e4804ccb221a1ff60f9a0f6d3
Author: Jordan Petridis <jpetridis gnome org>
Date:   Sat Oct 27 19:00:36 2018 +0300

    freedesktop-sdk.bst: Update to .15

 elements/freedesktop-sdk.bst | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/elements/freedesktop-sdk.bst b/elements/freedesktop-sdk.bst
index 94394d4..ef0644b 100644
--- a/elements/freedesktop-sdk.bst
+++ b/elements/freedesktop-sdk.bst
@@ -3,7 +3,7 @@ sources:
 - kind: git
   url: https://gitlab.com/freedesktop-sdk/freedesktop-sdk/
   track: 18.08
-  ref: 3d013cc2f43ed38bf5f1dc096e33f6b2f1b3e721 # freedesktop-sdk-18.08.13
+  ref: df43908e0a6b98a2cab5a532b9fbe82f6327732f # freedesktop-sdk-18.08.15
 config:
   options:
     target_arch: '%{arch}'