[release-branch.go1.11] go1.11.6

Change-Id: I944d7cb825b8791486446d78feae9eed0a5479c4
Reviewed-on: https://go-review.googlesource.com/c/go/+/167705
Run-TryBot: Andrew Bonventre <andybons@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Andrew Bonventre <andybons@golang.org>

VERSION

diff --git a/VERSION b/VERSION
index 04364e1..291f408 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-go1.11.5
\ No newline at end of file
+go1.11.6
\ No newline at end of file