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": "347b4629-a9de-4779-ac7a-3f0413f5ae6e",
    "type": "retrospective_process_groups",
    "attributes": {
      "retrospective_process_id": "745262c2-0172-4721-9463-9939fde3c638",
      "sub_status_id": "c28a511d-5af0-4fce-835f-7c53ab74806b",
      "position": 1,
      "updated_at": "2025-07-14T14:49:42.492-07:00",
      "created_at": "2025-07-14T14:49:42.492-07:00"
    },
    "relationships": {
      "retrospective_process_group_steps": {
        "data": []
      }
    }
  }
}