VOL-3978 - update to go 1.16.3

Change-Id: I35e71c614f3e2e614f3103ad97ae70886478db23
diff --git a/VERSION b/VERSION
index 4cda8f1..dc1e644 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-1.5.2
+1.6.0