curl --request GET \
  --url https://api.lyceum.technology/api/v2/external/environment-variables \
  --header 'Authorization: Bearer <token>'

{
  "environment_variables": [
    {
      "id": "<string>",
      "name": "<string>",
      "value": "<string>",
      "created_at": "2023-11-07T05:31:56Z",
      "updated_at": "2023-11-07T05:31:56Z",
      "is_sensitive": true
    }
  ]
}