List incident_sub_statuses

curl --request GET \
  --url https://api.rootly.com/v1/incidents/{incident_id}/sub_statuses \
  --header 'Authorization: Bearer <token>'

{
  "data": [
    {
      "id": "<string>",
      "type": "incident_sub_statuses",
      "attributes": {
        "incident_id": "<string>",
        "sub_status_id": "<string>",
        "assigned_at": "<string>",
        "assigned_by_user_id": 123
      }
    }
  ],
  "links": {
    "self": "<string>",
    "first": "<string>",
    "prev": "<string>",
    "next": "<string>",
    "last": "<string>"
  }
}