Update a retrospective step

curl --request PUT \
  --url https://api.rootly.com/v1/retrospective_steps/{id} \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/vnd.api+json' \
  --data '{
  "data": {
    "type": "retrospective_steps",
    "attributes": {
      "title": "<string>",
      "description": "<string>",
      "incident_role_id": "<string>",
      "due_after_days": 123,
      "position": 123,
      "skippable": true
    }
  }
}'

{
  "data": {
    "id": "07a7edf6-f774-4b9d-b9b4-79c2b7d40c39",
    "type": "retrospective_steps",
    "attributes": {
      "retrospective_process_id": "8d69c4bd-818f-4a23-accb-d20ac49951b0",
      "title": "Step 2",
      "description": "Step 2 description",
      "incident_role_id": "6f5eaee5-aa80-4db5-9f6f-e6a4523c4ab1",
      "due_after_days": 7,
      "position": 2,
      "skippable": true,
      "created_at": "2025-11-28T18:12:52.920-08:00",
      "updated_at": "2025-11-28T18:12:53.629-08:00"
    }
  }
}