Obtener lista de webhooks

curl --request GET \
  --url https://api.fint.app/api/v1/webhook \
  --header 'x-api-key: <api-key>'

{
  "webhooks": [
    {
      "id": 123,
      "url": "<string>",
      "active": true,
      "events": [
        "payment.created"
      ],
      "createdAt": "<string>",
      "externalReference": "<string>"
    }
  ]
}