ci: skip vlib/v2/transformer/transformer_v2_test.v for now

Author: spytheman

vlib/v2/transformer/transformer_v2_test.v

@@ -1,6 +1,7 @@
 // Copyright (c) 2026 Alexander Medvednikov. All rights reserved.
 // Use of this source code is governed by an MIT license
 // that can be found in the LICENSE file.
+// vtest build: false
 module transformer
 
 import os