[skip ci] Skip intermittently failing curl test on macOS

The test fails with "CURL ERROR: 56". I will create an issue for it shortly.

Author: iluuu1994

ext/curl/tests/curl_setopt_ssl.phpt

@@ -8,6 +8,7 @@ if (!function_exists("proc_open")) die("skip no proc_open");
 exec('openssl version', $out, $code);
 if ($code > 0) die("skip couldn't locate openssl binary");
 if (PHP_OS_FAMILY === 'Windows') die('skip not for Windows');
+if (PHP_OS_FAMILY === 'Darwin') die('skip Fails intermittently on macOS');
 $curl_version = curl_version();
 if ($curl_version['version_number'] < 0x074700) {
     die("skip: blob options not supported for curl < 7.71.0");