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": "f49acac1-4f5c-4b77-a39c-27dfd9edcef5",
    "type": "retrospective_process_groups",
    "attributes": {
      "retrospective_process_id": "535d875c-b32e-4bf2-9e99-b9e07e365e05",
      "sub_status_id": "a413918c-c544-4535-a039-7ed1808ddcf7",
      "position": 1,
      "updated_at": "2025-07-09T09:12:08.735-07:00",
      "created_at": "2025-07-09T09:12:08.735-07:00"
    },
    "relationships": {
      "retrospective_process_group_steps": {
        "data": []
      }
    }
  }
}