[gnome-build-meta/abderrahim/update-freedesktop] .gitlab-ci.yml: update buildstream to the same version as freedesktop-sdk

[Abderrahim Kitouni <akitouni src gnome org>]

commit 758239d36c45e305c502662503aeb1b3e0007701
Author: Abderrahim Kitouni <akitouni gnome org>
Date:   Thu Jul 26 16:46:49 2018 +0100

    .gitlab-ci.yml: update buildstream to the same version as freedesktop-sdk
    
    It needs a version newer than 1.1.3, but older than 1.1.4 as the latter dropped
    support for ostree cache servers.

 .gitlab-ci.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 45df47a..55f5b4f 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -4,7 +4,7 @@ variables:
   XDG_CACHE_HOME: "${CI_PROJECT_DIR}/cache"
   GET_SOURCES_ATTEMPTS: 3
   BST: 'bst'
-  BST_SHA: '06ae434a7017edbf67bf46c3fe2e327466801787' #  1.1.3
+  BST_SHA: 'bc5a40e3dccbe1cb8066171fc2c0a4a5abeaa31e' #  1.1.3-177-gbc5a40e3
 
 stages:
   - build