Get functionality uptime chart

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

{
  "data": {
    "2025-07-28": 100,
    "2025-07-29": 100,
    "2025-07-30": 100,
    "2025-07-31": 100,
    "2025-08-01": 100,
    "2025-08-02": 100,
    "2025-08-03": 100,
    "2025-08-04": 100,
    "2025-08-05": 100,
    "2025-08-06": 100,
    "2025-08-07": 100,
    "2025-08-08": 100,
    "2025-08-09": 50,
    "2025-08-10": 0,
    "2025-08-11": 100,
    "2025-08-12": 100
  }
}