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": "1eccffa1-2c22-49ba-a107-9f11c2bf0edf",
    "type": "retrospective_process_groups",
    "attributes": {
      "retrospective_process_id": "ef6e8a76-5908-4ebc-bdf4-ac150570e00f",
      "sub_status_id": "cbcc8d32-d148-42c1-a462-cb26008d9bd3",
      "position": 1,
      "updated_at": "2025-10-07T00:21:50.987-07:00",
      "created_at": "2025-10-07T00:21:50.987-07:00"
    },
    "relationships": {
      "retrospective_process_group_steps": {
        "data": []
      }
    }
  }
}