List On Call Shadows for Shift

curl --request GET \
  --url https://api.rootly.com/v1/schedules/{schedule_id}/on_call_shadows \
  --header 'Authorization: Bearer <token>'

{
  "data": [
    {
      "id": "<string>",
      "type": "on_call_shadows",
      "attributes": {
        "schedule_id": "<string>",
        "shadowable_type": "User",
        "shadowable_id": "<string>",
        "shadow_user_id": 123,
        "starts_at": "2023-11-07T05:31:56Z",
        "ends_at": "2023-11-07T05:31:56Z",
        "created_at": "<string>",
        "updated_at": "<string>"
      }
    }
  ],
  "links": {
    "self": "<string>",
    "first": "<string>",
    "prev": "<string>",
    "next": "<string>",
    "last": "<string>"
  }
}