Retrieves a RetrospectiveProcessGroup Step

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

{
  "data": {
    "id": "880c9d42-e9bb-4180-a778-d173e32ba11f",
    "type": "retrospective_process_group_steps",
    "attributes": {
      "retrospective_process_group_id": "cee99f02-fbaf-45de-b17b-e7cc456d42ec",
      "retrospective_step_id": "e976d0a5-7d14-4826-af83-a581e0dc326c",
      "position": 1,
      "updated_at": "2025-08-19T10:24:24.332-07:00",
      "created_at": "2025-08-19T10:24:24.332-07:00"
    }
  }
}