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

For golang/go#70931

Change-Id: I34c2f27f483baafb5894cf023daa885dcc0faec2
Reviewed-on: https://go-review.googlesource.com/c/tools/+/637835
Reviewed-by: Alan Donovan <[email protected]>
Reviewed-by: Robert Findley <[email protected]>
Auto-Submit: Gopher Robot <[email protected]>
LUCI-TryBot-Result: Go LUCI <[email protected]>