The squeak is likely from the wood knob on the winding crank. This is not uncommon and does not indicate anything is wrong with the movement or crank. The movements themselves will not squeak when they are wound.
If you turn the crank by hand without using the knob, and you still hearing squeaking, then it is the pulley that is squeaking. You can place one drop of oil (any type of common oil) on both sides of the pulley wheel where the shaft goes through.