Use Hyperf\Stringable\Str instead of Hyperf\Utils\Str (#5634)

Author: huangdijia

src/ClientFactory.php

@@ -12,7 +12,7 @@
 namespace Hyperf\WebSocketClient;
 
 use Hyperf\HttpMessage\Uri\Uri;
-use Hyperf\Utils\Str;
+use Hyperf\Stringable\Str;
 
 use function Hyperf\Coroutine\defer;