Retrieves a RetrospectiveProcessGroup Step

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

{
  "data": {
    "id": "43dd2733-1f52-446e-b1e7-90874553c673",
    "type": "retrospective_process_group_steps",
    "attributes": {
      "retrospective_process_group_id": "584b303e-dd9a-4bee-a6b8-be22ccfedbba",
      "retrospective_step_id": "34fe165d-da0b-4ab8-a11a-26f7de39e89b",
      "position": 1,
      "updated_at": "2025-08-07T02:22:34.387-07:00",
      "created_at": "2025-08-07T02:22:34.387-07:00"
    }
  }
}