List available secrets

curl --request GET \
  --url https://api.gcore.com/fastedge/v1/secrets \
  --header 'APIKey: <api-key>'

{
  "secrets": [
    {
      "id": 123,
      "name": "<string>",
      "comment": "<string>",
      "app_count": 123
    }
  ]
}