[libsecret/wip/dueno/gitlab-ci-fixes] .gitlab-ci.yml: install diffutils

[Daiki Ueno <dueno src gnome org>]

commit 01930d512344643b98f4ae325ec27163f346d284
Author: Daiki Ueno <dueno src gnome org>
Date:   Tue Mar 10 14:05:44 2020 +0100

    .gitlab-ci.yml: install diffutils

 .gitlab-ci.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index e7f3ec9..4bed3df 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -3,7 +3,7 @@ stages:
   - deploy
 
 variables:
-  DEPENDENCIES: dbus-x11 gcc gjs meson ninja-build python3-dbus python3-gobject redhat-rpm-config
+  DEPENDENCIES: dbus-x11 diffutils gcc gjs meson ninja-build python3-dbus python3-gobject redhat-rpm-config
 
 fedora:Werror:
   image: fedora:latest