[d-spy] build: disable net for appstream-validate

[Christian Hergert <chergert src gnome org>]

commit 6382a30fecf5a4202a74d97d4bcf62954a18cb59
Author: Christian Hergert <chergert redhat com>
Date:   Mon Aug 22 13:36:02 2022 -0700

    build: disable net for appstream-validate

 data/meson.build | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/data/meson.build b/data/meson.build
index 80e898a..9698e2c 100644
--- a/data/meson.build
+++ b/data/meson.build
@@ -41,7 +41,7 @@ appstream_file = i18n.merge_file(
 
 appstream_util = find_program('appstream-util', required: false)
 if appstream_util.found()
-  validate_args = ['validate-relax', appstream_file]
+  validate_args = ['validate', '--nonet', appstream_file]
   test('Validate appstream file', appstream_util, args: validate_args)
 endif