do not mix named and positional arguments in data provider definitions

Author: xabbuh

src/Symfony/Component/Cache/Tests/Traits/RedisTraitTest.php

@@ -74,7 +74,7 @@ public static function provideCreateConnection(): array
                 'Redis',
             ],
             [
-                'dsn' => sprintf('redis:?%s', implode('&', \array_slice($hosts, 0, 2))),
+                sprintf('redis:?%s', implode('&', \array_slice($hosts, 0, 2))),
                 'RedisArray',
             ],
         ];