Loopback check fails on local *.test websites

[pryley]

Feature request/bug description

Plugins fail to activate on local websites when using Herd or Laravel Valet (i.e. *.test domains) due to the Loopback sslverify check in wp_remote_get.

health-check/HealthCheck/class-health-check-loopback.php

Lines 71 to 73 in ed432ee

	$r = wp_remote_get( $url, compact( 'cookies', 'headers', 'timeout' ) );

.test is a reserved top-level domain intended for usage in software testing. It is guaranteed to never be registered into the Internet.
https://en.wikipedia.org/wiki/.test

The Loopback error:

stdClass Object (
    [status] => critical
    [message] => The loopback request to your site failed, this means features relying on them are not currently working as expected.<br>Error encountered: (0) cURL error 60: SSL certificate problem: unable to get local issuer certificate
)

Screenshot:

A fix could be as simple as:

add_filter('https_ssl_verify',
    fn ($verify, $url) => str_ends_with(parse_url($url, \PHP_URL_HOST), '.test') ? false : $verify,
    10,
    2,
);

Related issues

#322 and #357

[szepeviktor]

Please support all four from the standard.
https://www.rfc-editor.org/rfc/rfc2606.html#section-2