Get functionality uptime chart

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

{
  "data": {
    "2025-11-30": 100,
    "2025-12-01": 100,
    "2025-12-02": 100,
    "2025-12-03": 100,
    "2025-12-04": 100,
    "2025-12-05": 100,
    "2025-12-06": 100,
    "2025-12-07": 100,
    "2025-12-08": 100,
    "2025-12-09": 100,
    "2025-12-10": 100,
    "2025-12-11": 100,
    "2025-12-12": 50,
    "2025-12-13": 0,
    "2025-12-14": 100,
    "2025-12-15": 100
  }
}