url: fix windows drive letter handling

Address issue with Windows drive letter handling that was
causing es-module test suite to fail.

PR-URL: https://github.com/nodejs/node/pull/15490
Ref: https://github.com/whatwg/url/pull/343


Reviewed-By: Timothy Gu <timothygu99@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>