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": "5f265611-17d4-41c9-8550-435cc4b1fe81",
    "type": "retrospective_process_groups",
    "attributes": {
      "retrospective_process_id": "e4f4dd97-b771-44d9-bd17-a61185968cc7",
      "sub_status_id": "d736eeaa-c2c6-465f-b2c7-479290dbd7c3",
      "position": 1,
      "updated_at": "2025-12-19T05:18:13.929-08:00",
      "created_at": "2025-12-19T05:18:13.929-08:00"
    },
    "relationships": {
      "retrospective_process_group_steps": {
        "data": []
      }
    }
  }
}