Update Product
Updates an existing product in the Finmei product catalog. Use this action when you need to modify product details such as name, description, price, or currency. You must provide the product ID and at least one field to update. The action returns the complete updated product details. Prerequisites: - The product must already exist in the system (obtain product_id from List Products action) - At least one update field (name, description, price, or currency) must be provided Note: This action will fail if the product doesn't exist or if the Finmei API instance doesn't support product management endpoints.