Update error warning

Author: Sammyjo20

tests/Feature/SimpleCacheDriverTest.php

@@ -6,6 +6,8 @@
 use Sammyjo20\SaloonCachePlugin\Tests\Fixtures\Requests\SimpleCachedUserRequest;
 
 it('will return a cached response', function () {
+    error_reporting(E_ALL ^ E_WARNING);
+
     $mockClient = new MockClient([
         MockResponse::make(['name' => 'Sam']),
         MockResponse::make(['name' => 'Gareth']),