[meld] CI: Update requirements list

[Kai Willadsen <kaiw src gnome org>]

commit c76b889969d630fca7e51ec48e5d47fb4bfda3a7
Author: Kai Willadsen <kai willadsen gmail com>
Date:   Sat Aug 31 07:27:24 2019 +1000

    CI: Update requirements list
    
    We now explicitly include pip (which appears to not be installed by
    default any more) and remove the obsolete pygobject3 requirement.

 .gitlab-ci.yml | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)
---
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 9ba242db..35297c9e 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -3,9 +3,15 @@ stages:
   - build
 
 variables:
-  DEPENDENCIES: python3 pygobject3 gobject-introspection
-                python3-gobject gtk3 gtksourceview3
-                python3-pytest intltool glib2-devel
+  DEPENDENCIES: python3
+                python3-pip
+                python3-pytest
+                python3-gobject
+                gobject-introspection
+                gtk3
+                gtksourceview4
+                intltool
+                glib2-devel
 
 .linux-common: &linux-common
   image: fedora:rawhide