Update system-vc and fix get statistics with VC reference test.

Change-Id: I27a3c8e6a7f4c656006a58b39ff253c8e950fe9c
diff --git a/Changes b/Changes
index 032d1ed..1ba881e 100644
--- a/Changes
+++ b/Changes
@@ -18,6 +18,7 @@
 - Fix collection/corpus paths in the test suite (#806)
 - Fix authorization with POST tests.
 - Add apiVersion for checking VC in caching process (#806)
+- Update system-vc and fix get statistics with VC reference test.
 
 # version 0.79.1