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": "5df25107-ee29-48b2-bf40-f6e09a6ccfaf",
    "type": "retrospective_process_groups",
    "attributes": {
      "retrospective_process_id": "2111087b-5def-4d8b-b192-87b8b4b35c15",
      "sub_status_id": "293289b6-24c8-4ae0-9989-3cd75889f401",
      "position": 1,
      "updated_at": "2026-01-30T06:41:37.870-08:00",
      "created_at": "2026-01-30T06:41:37.870-08:00"
    },
    "relationships": {
      "retrospective_process_group_steps": {
        "data": []
      }
    }
  }
}