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": "4d1b71e1-7374-45f7-9eba-68ab176c0350",
    "type": "retrospective_process_groups",
    "attributes": {
      "retrospective_process_id": "5c412969-3b43-4605-b867-7ac4d94c1723",
      "sub_status_id": "a4557d8d-b909-40ab-bf51-7642c2f1a0b8",
      "position": 1,
      "updated_at": "2026-02-07T16:50:14.929-08:00",
      "created_at": "2026-02-07T16:50:14.929-08:00"
    },
    "relationships": {
      "retrospective_process_group_steps": {
        "data": []
      }
    }
  }
}