[gnome-builder] flatpak: Disable network tests

[Christian Hergert <chergert src gnome org>]

commit 4fc6a96771aac75fad79618cfdfbddfd96b4e6a6
Author: Georges Basile Stavracas Neto <georges stavracas gmail com>
Date:   Sat Jul 23 19:59:50 2022 -0300

    flatpak: Disable network tests
    
    As we can see, CI is not kind to these tests. Disable networking for
    now.

 org.gnome.Builder.Devel.json | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/org.gnome.Builder.Devel.json b/org.gnome.Builder.Devel.json
index 9fac589a7..ee0e443d1 100644
--- a/org.gnome.Builder.Devel.json
+++ b/org.gnome.Builder.Devel.json
@@ -652,6 +652,7 @@
                 "-Dtracing=true",
                 "-Dhelp=true",
                 "-Dchannel=flatpak-nightly",
+                "-Dnetwork_tests=false",
                 "-Dplugin_deviced=true"
             ],
             "cleanup" : [