[metacity] update .gitlab-ci.yml

[Alberts Muktupāvels <muktupavels src gnome org>]

commit a1d5067b124d245c2713d12039ef62aec3b97994
Author: Alberts Muktupāvels <alberts muktupavels gmail com>
Date:   Sun Sep 2 00:37:55 2018 +0000

    update .gitlab-ci.yml

 .gitlab-ci.yml | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 973ec926..00618964 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -9,6 +9,7 @@ build-ubuntu:
     - apt-get install -q -y --no-install-recommends
                       autoconf-archive
                       automake
+                      autopoint
                       build-essential
                       gettext
                       gsettings-desktop-schemas-dev