First of all, we don't have a cable clutch, so we don't have a clutch cable.
2nd of all, are you talking about a single "squeak" as you push the pedal, or are you saying as you keep your foot pressed down on the pedal, it squeaks continuously? If it's the former, I wouldn't even worry about it. Mine had a really small squeak (wouldn't hear it if you weren't listening for it) as I pressed the pedal. It was probably the hinge on the pedal. If it's the latter, then it's probably the throwout bearing, which involves removing the transmission, and is pretty important as far as the clutch operation goes... you'd def want to get that replaced if that's what's going on.