[release-branch.go1.16-security] go1.16.1

Change-Id: I4999d72caf9462554a2a6f1d761244cafec34718
Reviewed-on: https://team-review.git.corp.google.com/c/golang/go-private/+/1014541
Reviewed-by: Katie Hockman <katiehockman@google.com>

VERSION

diff --git a/VERSION b/VERSION
index 166e7ae..81026a0 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-go1.16
\ No newline at end of file
+go1.16.1
\ No newline at end of file