[gnome-builder] .gitlab-ci.yml: use flatpakref for node18 until merge

[Christian Hergert <chergert src gnome org>]

commit bb1f97b83ce0c757c3e85091dcd401e3195fa3b8
Author: Christian Hergert <chergert redhat com>
Date:   Tue Jul 12 11:57:14 2022 -0700

    .gitlab-ci.yml: use flatpakref for node18 until merge

 .gitlab-ci.yml | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)
---
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 61c36ce72..a1f3c1c1b 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -14,8 +14,9 @@ flatpak:
     APP_ID: "org.gnome.Builder.Devel"
     BUNDLE: "gnome-builder-git.flatpak"
   before_script:
-    - flatpak --user install -y org.freedesktop.Sdk.Extension.llvm14//22.08beta
-    - flatpak --user install -y org.freedesktop.Sdk.Extension.node18//22.08beta
+    - flatpak --user install -y org.freedesktop.Sdk.Extension.llvm15//22.08beta
+    - flatpak --user install -y --from 
https://dl.flathub.org/build-repo/97448/org.freedesktop.Sdk.Extension.node18.flatpakref
+    # - flatpak --user install -y org.freedesktop.Sdk.Extension.node18//22.08
 
 nightly:
   extends: '.publish_nightly'