You cannot spray lubricant externally to resolve this problem.
However to remove the slave cylinder is a 5 minute job requiring only hand tools (2 bolts), a jack to raise the car......and grease the pivot (see my earlier post).
The problem with sending the car into a mechanic is that they may tell you that you require a clutch, slave, ect when all you may need is a little grease.
If you are not a mechanic or mechanically inclined then how would you know if the advice is correct?
If your not comfortable servicing this yourself then perhaps you should send the car in to the dealer and take your chances.
I have repaired many a clutch "squeak" with a little grease in the appropriate area (vettes, ferrari, porsche, nsx, ect).
Note: if your release bearing is going then you should feel some actuation harshness when you apply the clutch, not just a noise.