[release-branch.go1.15] go1.15.11

Change-Id: I601bb0b69e8204055ce37150b50779818a339169
Reviewed-on: https://go-review.googlesource.com/c/go/+/306570
Run-TryBot: Carlos Amedee <carlos@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: David Chase <drchase@google.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>

VERSION

diff --git a/VERSION b/VERSION
index b22abb1..c25f990 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-go1.15.10
\ No newline at end of file
+go1.15.11
\ No newline at end of file