[gnome-build-meta] .gitlab-ci.yml: Use buildstream 1.1.2

[Javier Jardón Cabezas <jjardon src gnome org>]

commit ae5827ca3a35107f82bf88b2457e4ebf77b71c54
Author: Javier Jardón <jjardon gnome org>
Date:   Tue Mar 27 18:28:36 2018 +0100

    .gitlab-ci.yml: Use buildstream 1.1.2

 .gitlab-ci.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index c6cb8a8..59a18dd 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -6,7 +6,7 @@ variables:
   XDG_CACHE_HOME: "${CI_PROJECT_DIR}/cache"
   GET_SOURCES_ATTEMPTS: 3
   BST: 'bst --colors'
-  BST_SHA: '54ba73241bb812a3b69e3da5cb8ed8c6d2cfbb38' #  1.1.1-83-g54ba7324
+  BST_SHA: 'e91dc8336074d22126e559a29e23ef2d52c5506a' #  1.1.2
 
 stages:
   - build