[release-branch.go1.21] go1.21rc2

Change-Id: I4a2c753f3edf22290e0e71a90df6d380fc009202
Reviewed-on: https://go-review.googlesource.com/c/go/+/504876
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Auto-Submit: Gopher Robot <gobot@golang.org>
Run-TryBot: Gopher Robot <gobot@golang.org>
TryBot-Bypass: Dmitri Shuralyov <dmitshur@golang.org>
Reviewed-by: Michael Pratt <mpratt@google.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
diff --git a/VERSION b/VERSION
index 19ca591..ba1ca53 100644
--- a/VERSION
+++ b/VERSION
@@ -1,2 +1,2 @@
-go1.21rc1
-time 2023-06-15T19:02:18Z
+go1.21rc2
+time 2023-06-21T02:00:01Z