[gnome-disk-utility] ci: Use nigthly image

[Kai Lüke <kailueke src gnome org>]

commit 2eae2c57802b80c138825ad79da6d639953d1420
Author: Maximiliano Sandoval R <msandova gnome org>
Date:   Thu Jul 14 16:05:27 2022 +0200

    ci: Use nigthly image
    
    The sdk link is not working properly.

 .gitlab-ci.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 28f105d5..a2bc71b5 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -19,7 +19,7 @@ flatpak:
     MANIFEST_PATH: "flatpak/org.gnome.DiskUtility.json"
     FLATPAK_MODULE: "gnome-disk-utility"
     APP_ID: "org.gnome.DiskUtility"
-    RUNTIME_REPO: "https://sdk.gnome.org/gnome-nightly.flatpakrepo";
+    RUNTIME_REPO: "https://nightly.gnome.org/gnome-nightly.flatpakrepo";
   extends: .flatpak