Delete a Retrospective Process Group

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

{
  "data": {
    "id": "<string>",
    "type": "retrospective_process_groups",
    "attributes": {
      "retrospective_process_id": "<string>",
      "sub_status_id": "<string>",
      "position": 123
    }
  }
}