Updates kvmx: 3b270da Fix: use ubuntu-keyring instead of ubuntu-archive-keyring

diff --git a/kvmx b/kvmx
index d3509a200d6b0a3a3c7921f5f05a5a887727f768..3b270da1911fb5801cd12c4120417a1b02caccb0 160000 (submodule)
--- a/kvmx
+++ b/kvmx
@@ -1 +1 @@
-Subproject commit d3509a200d6b0a3a3c7921f5f05a5a887727f768
+Subproject commit 3b270da1911fb5801cd12c4120417a1b02caccb0