[gnome-build-meta] .gitlab-ci.yml: Use more robust format to specify the buildstream version to use

[Javier Jardón Cabezas <jjardon src gnome org>]

commit ef001ab276f2d9d84b87fcdcdb1ed949b35dcc0f
Author: Javier Jardón <jjardon gnome org>
Date:   Wed Feb 13 21:34:43 2019 +0000

    .gitlab-ci.yml: Use more robust format to specify the buildstream version to use

 .gitlab-ci.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 453983c8..a9c1fdec 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 --config build.conf --log-file logs/build.log --colors"
-  BST_SHA: "10abe77fe8d77385d86f225b503d9185f4ef7f3a" #  1.2.3
+  BST_SHA: '1.2.3-0-g10abe77fe8d77385d86f225b503d9185f4ef7f3a'
   BST_EXTERNAL_SHA: '0.8.0-0-g762ea216b751bf89ac15350e1cb98542963bbf33'
   FLATPAK_BRANCH: master