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

For golang/go#79000

Change-Id: Iec9aa841e89df95e59ba0c675ac3745a4e7f0948
Reviewed-on: https://go-review.googlesource.com/c/tools/+/778000
Auto-Submit: Gopher Robot <gobot@golang.org>
LUCI-TryBot-Result: golang-scoped@luci-project-accounts.iam.gserviceaccount.com <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Hongxiang Jiang <hxjiang@golang.org>
Reviewed-by: Madeline Kalil <mkalil@google.com>
Reviewed-by: Alan Donovan <adonovan@google.com>