Get an alert route

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

{
  "data": {
    "id": "5046ed12-f6ad-4728-9499-4d82b4e41383",
    "type": "alert_routes",
    "attributes": {
      "name": "Test Alert Route-9666",
      "enabled": true,
      "created_at": "2025-09-22T15:27:35.176-07:00",
      "updated_at": "2025-09-22T15:27:35.176-07:00",
      "alerts_source_ids": [],
      "owning_team_ids": []
    },
    "relationships": {
      "alert_routing_rules": {
        "data": []
      }
    }
  }
}