Illion NZ Credit Enquiry; better handling of non-ASCII characters

The Illion NZ Credit Enquiry does not handle diacritical or other non-ASCII characters.

For example, sending the Last Name "Pōtaka" will return the server error "An exception occurred while processing the request (50)".

finPOWER Connect now updates diacritical characters to their base letter, e.g. "Pōtaka" is sent as "Potaka".

Other characters, such as Chinese characters, will fail validation with the message "Invalid Last Name. One or more characters are not supported by the service provider."