[gnome-build-meta/alatiera/bst-bump] CI: Bump buildstream to 1.2.1

[Jordan Petridis <jpetridis src gnome org>]

commit d98cce39fd993e5e63c44995e4d3f01969093e6d
Author: Jordan Petridis <jpetridis gnome org>
Date:   Fri Sep 21 17:24:48 2018 +0300

    CI: Bump buildstream to 1.2.1

 .gitlab-ci.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 15fb9a1..d833be6 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: '301a393cb6499b3f869d74827a9e8dc61b97d00e' #  1.1.7
+  BST_SHA: "45304c44a437eafc85f9f322cbd9d509bb740d57" #  1.2.1
   BST_EXTERNAL_SHA: 'ab9b37b5b52a7b2f62ddf17a68b76512da538291' # 0.5.0
   FLATPAK_BRANCH: master