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": "492c769d-7743-4d2a-8266-896f63ec1557",
    "type": "retrospective_process_groups",
    "attributes": {
      "retrospective_process_id": "9d05148c-402b-4a7a-ab7b-d59e2957af24",
      "sub_status_id": "7b3e9ce6-4a06-4785-b0dc-99654398366c",
      "position": 1,
      "updated_at": "2025-11-20T15:57:06.340-08:00",
      "created_at": "2025-11-20T15:57:06.340-08:00"
    },
    "relationships": {
      "retrospective_process_group_steps": {
        "data": []
      }
    }
  }
}