izyim/app/Http/Resources/UserInvitation.php

<?php

namespace App\Http\Resources;
use Carbon\Carbon;
use Illuminate\Http\Resources\Json\JsonResource;

class UserInvitation extends JsonResource
{
    public function toArray($request)
    {
        return [
            'id' => $this->id,
            'email' => $this->email,
            'created_at' =>Carbon::parse($this->created_at)->format('d/m/Y')
        ];
    }

}