[nautilus] CI: Update to 3.30 image

[Carlos Soriano <csoriano src gnome org>]

commit 0a4327d0cd31a96ef880ae2aa5a03c7497a568c2
Author: Carlos Soriano <csoriano1618 gmail com>
Date:   Tue Oct 9 10:18:12 2018 +0000

    CI: Update to 3.30 image

 .gitlab-ci.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 63f268675..cce53c189 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -14,7 +14,7 @@ stages:
       - ninja test
 
 flatpak:
-    image: registry.gitlab.gnome.org/gnome/gnome-runtime-images/gnome:3.28
+    image: registry.gitlab.gnome.org/gnome/gnome-runtime-images/gnome:3.30
     stage: test
     variables:
         MANIFEST_PATH: "build-aux/flatpak/org.gnome.Nautilus.yml"