Support additional schmes in URL validation

Your environment

• Version of jquery-validate: Whatever's on https://jqueryvalidation.org/url-method/
• Browser name and version: Safari Version 17.6 (19618.3.11.11.5)

Current behavior

URL validation rejects valid URLs such as rsync://master.pgxn.org/pgxn/. Perhaps it's limited to http/https URLs? There are a lot more schemes supported by the standard tho.

Expected behavior

rsync://master.pgxn.org/pgxn/ should be considered valid.

Live demo

• Go to https://jqueryvalidation.org/url-method/
• Scroll down and enter rsync://master.pgxn.org/pgxn/ in the form
• Submit

Thanks!