fix fpm setup on macos

[brettmc]

Remove the "setup php-fpm" step for macos, since the setup-php step reliably installs php-fpm in a location found by the tests.
Replace example.com with a local cli-server endpoint, since macos builds were often failing to reach example.com

[brettmc]

I didn't remove the setup-fpm step for linux - although setup-php does install php-fpm, the tests failed and I didn't investigate further.

Also note that the macos tests seem a bit flaky, I'm seeing lots of failures for the test http client reaching example.com (which was briefly unreachable for me, and also according to https://downforeveryoneorjustme.com/example.com earlier today). macos seems particularly sensitive to it.

[jmjoy]

Maybe you can replace example.com with a more reliable website.

[brettmc]

Maybe you can replace example.com with a more reliable website.

I will try something tomorrow. example.com is probably the best choice for an external website, so I'll look at running a local webserver (eg php's cli-server).

edit: updated to use cli-server, and everything is green now.

[jmjoy]

Is there any update?

[brettmc]

Is there any update?

No more updates, if you are happy with the use of built-in webserver to replace example.com