[release-branch.go1.20] go1.20.13

Change-Id: I8982d80d8221bf6b5a4b1efd559192b74886aab2
Reviewed-on: https://go-review.googlesource.com/c/go/+/555015
Commit-Queue: Gopher Robot <gobot@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
Auto-Submit: Gopher Robot <gobot@golang.org>
TryBot-Bypass: Dmitri Shuralyov <dmitshur@golang.org>
diff --git a/VERSION b/VERSION
index b4091fb..104848a 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-go1.20.12
\ No newline at end of file
+go1.20.13
\ No newline at end of file