feature-TICKETS-10241 fix with namespace and composer v2

Author: Piotr Suszalski

src/Service/Exception/ConnectionException.php

@@ -1,5 +1,5 @@
 <?php declare(strict_types=1);
 
-namespace FreshMail\Api\Client\Service\Http\Exception;
+namespace FreshMail\Api\Client\Service\Exception;
 
 class ConnectionException extends \Exception{}