Retrieves a retrospective step

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

{
  "data": {
    "id": "65a682f6-fa66-4438-9147-8a0da500dc11",
    "type": "retrospective_steps",
    "attributes": {
      "retrospective_process_id": "22741b0a-ffba-4537-a776-7303be7b7e3d",
      "title": "Step 11",
      "description": "Bar",
      "incident_role_id": "93882ea2-2c45-4979-a558-020c5261a565",
      "due_after_days": null,
      "position": 1,
      "skippable": true,
      "created_at": "2025-12-03T15:48:10.268-08:00",
      "updated_at": "2025-12-03T15:48:10.268-08:00"
    }
  }
}