Retrieves a retrospective step

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

{
  "data": {
    "id": "db2c4028-ae67-463c-9437-ebbec19f89a8",
    "type": "retrospective_steps",
    "attributes": {
      "retrospective_process_id": "475ae50e-dc6a-4b7c-b52f-23b1f5bedeb1",
      "title": "Step 11",
      "description": "Bar",
      "incident_role_id": "0190f32b-5b80-4306-930f-0a4c3a6e885c",
      "due_after_days": null,
      "position": 1,
      "skippable": true,
      "created_at": "2025-10-07T10:11:47.467-07:00",
      "updated_at": "2025-10-07T10:11:47.467-07:00"
    }
  }
}