Delete a Retrospective Process Group

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

{
  "data": {
    "id": "222c01ba-0c9e-41fb-9c20-cc048c43e6ca",
    "type": "retrospective_process_groups",
    "attributes": {
      "retrospective_process_id": "94cd417f-4d37-4c3f-9d35-abf4514db0f1",
      "sub_status_id": "3de98b54-f350-42ed-ae04-90e3582f8d29",
      "position": 1,
      "updated_at": "2025-08-15T10:43:38.970-07:00",
      "created_at": "2025-08-15T10:43:38.042-07:00"
    },
    "relationships": {
      "retrospective_process_group_steps": {
        "data": []
      }
    }
  }
}