Retrieves an override shift

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

{
  "data": {
    "id": "78db4d50-7a59-4c4f-b858-78f4319448ce",
    "type": "shifts",
    "attributes": {
      "schedule_id": "2ff5f830-2efc-4372-8eb9-2c4bbf892c39",
      "rotation_id": "553efe7d-29df-4afc-bd37-3d9ca61dc1b7",
      "starts_at": "2025-06-18T22:16:40.000-07:00",
      "ends_at": "2025-06-19T06:16:40.000-07:00",
      "is_override": true
    },
    "relationships": {
      "shift_override": {
        "data": null
      },
      "user": {
        "data": {
          "id": "354",
          "type": "users"
        }
      }
    }
  }
}