update vkh

diff --git a/vkh b/vkh
index e0aac8102a8036b9aaffb191c3ee76356bb8c032..1d0c0f45a2389d2e8b93c8c562ef467196fc38fd 160000 (submodule)
--- a/vkh
+++ b/vkh
@@ -1 +1 @@
-Subproject commit e0aac8102a8036b9aaffb191c3ee76356bb8c032
+Subproject commit 1d0c0f45a2389d2e8b93c8c562ef467196fc38fd