[release-branch.go1.21] go1.21.10

Change-Id: I655ab537d86a2ec71634a2f4ca5d520834de9fda
Reviewed-on: https://go-review.googlesource.com/c/go/+/583857
Auto-Submit: Gopher Robot <gobot@golang.org>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: David Chase <drchase@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
diff --git a/VERSION b/VERSION
index 88ae476..e8ac3fb 100644
--- a/VERSION
+++ b/VERSION
@@ -1,2 +1,2 @@
-go1.21.9
-time 2024-03-29T15:27:02Z
+go1.21.10
+time 2024-05-01T19:49:47Z