Retrieves a retrospective step

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

{
  "data": {
    "id": "4619439f-440f-45b1-a3be-71c96c2502c7",
    "type": "retrospective_steps",
    "attributes": {
      "retrospective_process_id": "1c5fe844-6922-44b4-b78c-83bce1a046ca",
      "title": "Step 11",
      "description": "Bar",
      "incident_role_id": "56f06dd2-630a-452b-acc6-acf926e88c84",
      "due_after_days": null,
      "position": 1,
      "skippable": true,
      "created_at": "2025-11-03T16:52:55.909-08:00",
      "updated_at": "2025-11-03T16:52:55.909-08:00"
    }
  }
}