[release-branch.go1.13] go1.13.6

Change-Id: I8c0396849725345a12d4ca754f926714561fcc6e
Reviewed-on: https://go-review.googlesource.com/c/go/+/214080
Run-TryBot: Carlos Amedee <carlos@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Alexander Rakoczy <alex@golang.org>

VERSION

diff --git a/VERSION b/VERSION
index 024f249..a92889e 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-go1.13.5
\ No newline at end of file
+go1.13.6
\ No newline at end of file