Creates an incident feedback

curl --request POST \
  --url https://api.rootly.com/v1/incidents/{incident_id}/feedbacks \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/vnd.api+json' \
  --data '
{
  "data": {
    "type": "incident_feedbacks",
    "attributes": {
      "feedback": "<string>",
      "rating": 4,
      "anonymous": true
    }
  }
}
'

{
  "data": {
    "id": "17a6310c-83f2-44da-afe9-1cf9946862c0",
    "type": "incident_feedbacks",
    "attributes": {
      "rating": 4,
      "rating_humanized": "Very satisfied",
      "feedback": "New Feedback",
      "anonymous": true,
      "updated_at": "2025-12-21T12:08:47.269-08:00",
      "created_at": "2025-12-21T12:08:47.269-08:00"
    }
  }
}