Unify API runmtime exceptions on masker when invalid JSON is provided

[Breus]

Currently, calling JsonMasker.mask(String or byte[]) can give two results:

1. In case valid JSON was provided, valid JSON is returned according to the provided masking configurations
2. In case invalid JSON was provided, some runtime exception is thrown

The second case can be caused by multiple cases (e.g. IllegalStateException or ArrayOutOfBoundException).

This should be unified such that the API can give two results:

1. Unchanged
2. An InvalidJsonException runtime exception is thrown