publicsuffix: update table to latest list from publicsuffix.org

Update the list to revision 2225db8d9f4a2a27ec697c883360632fa0c16261
(2018-05-23T23:26:06Z).

Change-Id: Ia47c0d0037c94c7c5c55eca95eced2d7a5deefae
Reviewed-on: https://go-review.googlesource.com/115219
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>