Lemonade Change

You are selling lemonade at a stand. Each lemonade costs $5. Customers line up to buy one lemonade each, paying with a $5, $10, or $20 bill. You must give each customer the correct change immediately after they pay, using only the bills you have received from previous customers. Write a function `lemonade_change(bills: list[int]) -> bool` that returns `True` if you can provide correct change to every customer in the order given by `bills`, and `False` otherwise. You start with no cash on hand.

>>> lemonade_change([5,5,5,10,20])
True
>>> lemonade_change([5,5,10,10,20])
False