Get functionality uptime chart

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

{
  "data": {
    "2025-09-29": 100,
    "2025-09-30": 100,
    "2025-10-01": 100,
    "2025-10-02": 100,
    "2025-10-03": 100,
    "2025-10-04": 100,
    "2025-10-05": 100,
    "2025-10-06": 100,
    "2025-10-07": 100,
    "2025-10-08": 100,
    "2025-10-09": 100,
    "2025-10-10": 100,
    "2025-10-11": 50,
    "2025-10-12": 0,
    "2025-10-13": 100,
    "2025-10-14": 100
  }
}