Retrieves a schedule shifts

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

{
  "data": [
    {
      "id": "9a7eed25-ddae-573c-9151-6b44109cecff",
      "type": "shifts",
      "attributes": {
        "schedule_id": "84313c00-f304-4216-a028-e2e05a7de204",
        "rotation_id": "ef56b101-4d8c-427c-a74d-cd9b8d6e1318",
        "starts_at": "2025-10-20T06:34:23.000-07:00",
        "ends_at": "2025-10-20T10:34:23.000-07:00",
        "is_override": true
      },
      "relationships": {
        "shift_override": {
          "data": null
        },
        "user": {
          "data": {
            "id": "500",
            "type": "users"
          }
        }
      }
    },
    {
      "id": "05b05cc4-b909-5961-8fc4-1dd52921a1f7",
      "type": "shifts",
      "attributes": {
        "schedule_id": "84313c00-f304-4216-a028-e2e05a7de204",
        "rotation_id": "ab709721-f5a2-4c9e-9259-3ce7615d5dc2",
        "starts_at": "2025-10-20T11:34:24.000-07:00",
        "ends_at": "2025-10-20T15:34:24.000-07:00",
        "is_override": false
      },
      "relationships": {
        "shift_override": {
          "data": null
        },
        "user": {
          "data": {
            "id": "504",
            "type": "users"
          }
        }
      }
    }
  ]
}