Auth test

curl --request GET \
  --url https://api.vintl.io/v1/ping \
  --header 'X-API-Key: <api-key>'

{
  "type": "https://vintl.io/errors/not-found",
  "title": "Not Found",
  "status": 404,
  "detail": "series 'INVALID' not found",
  "instance": "<string>",
  "request_id": "<string>"
}