[polari/ci] ci: Try dependency list from the polari .spec instead

[Gitlab System User <gitlab src gnome org>]

commit e609c6b71cc3e571287366b64cb12ee8a8d6cc08
Author: Florian Müllner <fmuellner gnome org>
Date:   Thu Oct 19 12:29:49 2017 +0200

    ci: Try dependency list from the polari .spec instead

 .gitlab-ci.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 7634c26..0d07849 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -4,7 +4,7 @@ stages:
  - build
 
 before_script:
-  - dnf install -y gcc meson redhat-rpm-config gettext itstool gtk3-devel
+  - dnf install -y gcc meson pkgconfig gettext itstool gtk3-devel
                    gjs-devel gobject-introspection-devel telepathy-glib-devel
                    libappstream-glib desktop-file-utils