[gnome-games/wip/exalm/stabilize: 6/6] ci: Switch to 3.38 images

[Alexander Mikhaylenko <alexm src gnome org>]

commit ae5b4481034f85812d345a0ee29f10c6f5a85853
Author: Alexander Mikhaylenko <alexm gnome org>
Date:   Sat Sep 12 21:04:14 2020 +0500

    ci: Switch to 3.38 images

 .gitlab-ci.yml | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index a9a82715..767260b5 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -4,7 +4,7 @@ variables:
   BUNDLE: 'gnome-games-git.flatpak'
 
 tests:
-  image: registry.gitlab.gnome.org/gnome/gnome-runtime-images/gnome:master
+  image: registry.gitlab.gnome.org/gnome/gnome-runtime-images/gnome:3.38
   stage: test
   tags:
     - flatpak
@@ -22,7 +22,7 @@ flatpak:
   extends: '.flatpak'
   variables:
     MANIFEST_PATH: 'flatpak/org.gnome.Games.json'
-    RUNTIME_REPO: 'https://nightly.gnome.org/gnome-nightly.flatpakrepo'
+    RUNTIME_REPO: 'https://flathub.org/repo/flathub.flatpakrepo'
     FLATPAK_MODULE: 'gnome-games'
     APP_ID: 'org.gnome.GamesDevel'
     GIT_SUBMODULE_STRATEGY: recursive