[gnome-build-meta/alatiera/fdo-18-08-21] junction.refs: update to freedestkop-sdk 18.08.21

[Javier Jardón Cabezas <jjardon src gnome org>]

commit 56ed7dd59c923ce19537d05470dc36a00ab06081
Author: Jordan Petridis <jpetridis gnome org>
Date:   Sun Dec 2 13:34:59 2018 +0200

    junction.refs: update to freedestkop-sdk 18.08.21
    
    The tag is currently missing, which is why git describe says .20-80
    instead of .21

 junction.refs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/junction.refs b/junction.refs
index 8c0cad8..a328d05 100644
--- a/junction.refs
+++ b/junction.refs
@@ -1,4 +1,4 @@
 projects:
   gnome:
     freedesktop-sdk.bst:
-    - ref: freedesktop-sdk-18.08.20-8-ge325d81142fa460ac94ec805e1032b2573d4a91c
+    - ref: freedesktop-sdk-18.08.21-0-g631d0af108c267bec4ae17d411771fb6f893c8cb