fix: Decimal→float для JSON сериализации price

examples/pg-list-python/code/catalog.py

@@ -21,7 +21,7 @@ def list_products(event):
     finally:
         conn.close()
 
-    products = [{"id": row[0], "name": row[1], "price": row[2]} for row in rows]
+    products = [{"id": row[0], "name": row[1], "price": float(row[2])} for row in rows]
     return {"products": products, "count": len(products)}