Retrieves a retrospective step

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

{
  "data": {
    "id": "b950701d-602f-4dd1-9846-bd77a90c91db",
    "type": "retrospective_steps",
    "attributes": {
      "retrospective_process_id": "f991afd2-e214-457e-a7fa-2937d4eeebcf",
      "title": "Step 11",
      "description": "Bar",
      "incident_role_id": "d9a29e18-b66a-4b3f-b3c8-8f82601105da",
      "due_after_days": null,
      "position": 1,
      "skippable": true,
      "created_at": "2026-02-06T12:06:30.827-08:00",
      "updated_at": "2026-02-06T12:06:30.827-08:00"
    }
  }
}