Update a Retrospective Process Group

curl --request PUT \
  --url https://api.rootly.com/v1/retrospective_process_groups/{id} \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/vnd.api+json' \
  --data '
{
  "data": {
    "type": "retrospective_process_groups",
    "attributes": {
      "sub_status_id": "<string>",
      "position": 123
    }
  }
}
'

{
  "data": {
    "id": "0a547af5-8e73-4ea4-a9a5-c38cf3067d92",
    "type": "retrospective_process_groups",
    "attributes": {
      "retrospective_process_id": "c141c715-4043-4016-95e0-1baf39b65712",
      "sub_status_id": "99b8cab5-07fb-49a4-9644-1075634d7c7e",
      "position": 1,
      "updated_at": "2025-12-03T15:48:05.982-08:00",
      "created_at": "2025-12-03T15:48:05.982-08:00"
    },
    "relationships": {
      "retrospective_process_group_steps": {
        "data": []
      }
    }
  }
}