Is ceramic capacitor suitable for snubber?
Basic snubber circuits are: -


Resistor in series with a capacitor
Diode in series with a parallel resistor and capacitor


The "well-known" and documented potential problem with ceramic capacitors is their high Q (very low effective series resistance, ESR). This can cause unnecessary "ringing" and voltage peaks that can exceed voltage ratings for some semiconductor devices. 

It can cause problems on power supplies of certain types but, as a snubber, the ESR is  limited by the series resistor or the series diode.