Is a higher capacitance rating ok for filtering?
The data sheet recommends 2.2nF X7R +/-10% 50V rating for the charge pump.

It’s quite possible that 100nF will function, but personally I would use the recommended type, including the voltage rating and dielectric type.

There are possible side effects to using a part that different without detailed knowledge of the internals, such as instability or damage to the part.