Retrieves an incident role

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

{
  "data": {
    "id": "6b50ab91-a81f-42a7-926d-bd548fd8b799",
    "type": "incident_roles",
    "attributes": {
      "slug": "sit-est-quae-cum",
      "name": "Sit est quae cum.",
      "summary": null,
      "description": null,
      "position": 1,
      "optional": false,
      "enabled": true,
      "allow_multi_user_assignment": false,
      "created_at": "2025-12-24T09:26:31.459-08:00",
      "updated_at": "2025-12-24T09:26:31.459-08:00"
    }
  }
}