[calls] ci: Upgrade certificates

[Evangelos Ribeiro Tzaras <devrtz src gnome org>]

commit eb0bf0abf40b2dce1151e022ceae23e0a519cc3f
Author: Evangelos Ribeiro Tzaras <devrtz fortysixandtwo eu>
Date:   Tue Oct 19 11:43:06 2021 +0200

    ci: Upgrade certificates
    
    Fixes #346

 .gitlab-ci.yml | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
---
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 17a676fc..9cf62159 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -82,7 +82,8 @@ validate-metadata:
   before_script:
     - export DEBIAN_FRONTEND=noninteractive
     - apt-get -y update
-    - apt-get -y install appstream-util
+    - apt-get -y install eatmydata ca-certificates
+    - eatmydata apt-get -y install appstream-util
   script:
     - appstream-util validate data/org.gnome.Calls.metainfo.xml