[release-branch.go1.11-security] go1.11.3

Change-Id: I0933c8d2f635e987db1a36030ef330f77b5ef8a8
Reviewed-on: https://team-review.git.corp.google.com/c/377323
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>

VERSION

diff --git a/VERSION b/VERSION
index ae7717d..aa1dbdc 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-go1.11.2
\ No newline at end of file
+go1.11.3
\ No newline at end of file