Updating openonu-go to 1.3.23

Change-Id: If65e4c0ca0dcecb555bb5f8052572d8bbe670571
diff --git a/VERSION b/VERSION
index 3db58c9..9423d08 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-2.8.19
+2.8.20