chore: minor fixes and formatting

handlers/client/__init__.py

@@ -1,11 +1,11 @@
+from .cart import router as cart_router
+from .catalogue import router as catalogue_router
+from .checkout import router as checkout_router
 from .invoices import router as invoice_router
 from .menu import router as menu_router
-from .catalogue import router as catalogue_router
 from .products import router as products_router
-from .cart import router as cart_router
-from .checkout import router as checkout_router
-from .security import router as security_router
 from .search import router as search_router
+from .security import router as security_router
 
 routers = [
     invoice_router,