Add *.exe.xyz to the public suffix list

Agent says: only blocker here is registration must be valid for 2 more years.

exe.xyz currently expires December 12, 2026.

@crawshaw if you re-up registration for at least 2 more years, I'll click the remaining buttons.

Renewal done.

Opened https://github.com/publicsuffix/list/pull/2810

They do not appear amenable, and my time box has expired.

Done!