Retrieves an override shift

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

{
  "data": {
    "id": "54a58214-471e-4030-b8da-cf599e8f8c85",
    "type": "shifts",
    "attributes": {
      "schedule_id": "bb9aece0-7ee6-409e-b0a9-874590d51dbd",
      "rotation_id": "865577cf-4af4-4de5-8de9-41580e5dc24e",
      "user_id": 849,
      "starts_at": "2026-02-08T16:43:25.000-08:00",
      "ends_at": "2026-02-09T00:43:25.000-08:00",
      "is_override": true
    },
    "relationships": {
      "shift_override": {
        "data": null
      },
      "user": {
        "data": {
          "id": "849",
          "type": "users"
        }
      }
    }
  }
}