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

For golang/go#68916

Change-Id: I62a0ef8bf60353dcd08f9e5f153a2693912a677e
Reviewed-on: https://go-review.googlesource.com/c/tools/+/606295
TryBot-Bypass: Robert Findley <rfindley@google.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: Robert Findley <rfindley@google.com>
Auto-Submit: Gopher Robot <gobot@golang.org>