[UC-22] Update migrations namespace in BitBagSyliusUserComExtension

Author: tomkalon

src/DependencyInjection/BitBagSyliusUserComExtension.php

@@ -33,7 +33,7 @@ public function prepend(ContainerBuilder $container): void
 
     protected function getMigrationsNamespace(): string
     {
-        return 'Sylius\BitBagSyliusUserComPlugin\Migrations';
+        return 'BitBag\SyliusUserComPlugin\Migrations';
     }