Delete a Retrospective Process Group

curl --request DELETE \
  --url https://api.rootly.com/v1/retrospective_process_groups/{id} \
  --header 'Authorization: Bearer <token>'

{
  "data": {
    "id": "60d2aaf2-7ffa-4602-9e31-846386d52791",
    "type": "retrospective_process_groups",
    "attributes": {
      "retrospective_process_id": "11712000-1d3f-4de6-9a19-a45db5f4a612",
      "sub_status_id": "e380951f-6223-4e43-ba73-d5d8f55a935a",
      "position": 1,
      "updated_at": "2025-12-19T18:17:54.881-08:00",
      "created_at": "2025-12-19T18:17:54.360-08:00"
    },
    "relationships": {
      "retrospective_process_group_steps": {
        "data": []
      }
    }
  }
}