Replace username() with userName()

ensure consistency with FakerPHP

database/factories/UserFactory.php

@@ -35,7 +35,7 @@ class UserFactory extends Factory
     public function definition(): array
     {
         return [
-            'name'              => fake()->username(),
+            'name'              => fake()->userName(),
             'email'             => fake()->unique()->safeEmail(),
             'email_verified_at' => now(),
             'password'          => static::$password ??= Hash::make('password'),