[gjs] CI: pinned to old tag

[Philip Chimento <pchimento src gnome org>]

commit 3c01264844b6eb096f1a36ef41f16dc7f97b95e7
Author: Claudio André <claudioandre br gmail com>
Date:   Mon Apr 9 20:00:58 2018 -0300

    CI: pinned to old tag
    
    CI is failing on Gtk.init() due to the new Docker image (it seems).

 .gitlab-ci.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 9f8ae38a..b41fe3d4 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -70,7 +70,7 @@ fedora:
   <<: *build
   when: always
   stage: test
-  image: claudioandre/spidermonkey:fedora.dev.gcc
+  image: claudioandre/spidermonkey:job-400.5
   variables:
     CC: gcc
     DEV: devel