[gedit-plugins/flake8] Update .gitlab-ci.yml

[Jordi Mas <jmas src gnome org>]

commit 8a3619fc81b4fa61c52442ecbb39673317d19733
Author: Jordi Mas <jmas softcatala org>
Date:   Thu May 16 13:44:25 2019 +0000

    Update .gitlab-ci.yml

 .gitlab-ci.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index da418f7..8af4109 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -26,7 +26,7 @@ check:
   before_script:
     - export DEBIAN_FRONTEND=noninteractive
     - apt-get update -y
-    - apt-get install python3 python3-pip python3-dbus
+    - apt-get install python3 python3-pip python3-dbus  -y
     - python3 -m pip install flake8
 
   script: