[release-branch.go1.21] go1.21.7

Change-Id: I2c0bbd094a1e9a12576869437a362da40f76f22d
Reviewed-on: https://go-review.googlesource.com/c/go/+/562117


Reviewed-by: Michael Knyszek <mknyszek@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Auto-Submit: Gopher Robot <gobot@golang.org>
Reviewed-by: David Chase <drchase@google.com>

VERSION

-go1.21.6
-time 2024-01-04T23:43:26Z
+go1.21.7
+time 2024-02-02T18:09:21Z