This is an automated CL which updates the go.mod and go.sum.

For golang/go#68916

Change-Id: I5d9d0e51da06fb995a8d210aaba537d6c0ae61ad
Reviewed-on: https://go-review.googlesource.com/c/tools/+/609675
Auto-Submit: Gopher Robot <gobot@golang.org>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Robert Findley <rfindley@google.com>
Reviewed-by: Hongxiang Jiang <hxjiang@golang.org>