curl --request GET \
  --url http://localhost:3000/v1/admin/notifications/email-templates

{
  "templates": [
    {
      "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
      "notification_type": "<string>",
      "subject": "<string>",
      "body_html": "<string>",
      "body_text": "<string>",
      "is_enabled": true,
      "available_variables": [
        "<string>"
      ],
      "created_at": "<string>",
      "updated_at": "<string>"
    }
  ]
}