List webhooks

curl --request GET \
  --url https://api.buildr.com/api/2023-01/webhooks \
  --header 'Authorization: <authorization>'

{
  "webhooks": [
    {
      "id": "123e4567-e89b-12d3-a456-426614174000",
      "url": "https://example.com/webhook",
      "version": 1,
      "description": "Webhook endpoint",
      "filter_types": [
        "project.create"
      ]
    }
  ]
}