By Brenna Hughes Neghaiwi ZURICH (Reuters) -Lawmakers blocked a bid to overhaul strict Swiss banking secrecy rules on Friday in a blow to freedom of information advocates seeking an exemption for journalists and whistleblowers. Switzerland has been under fire over its press freedom rules after a law introduced in 2015 led a leading media group, Tamedia, to bow out from an international investigation into a trove of Credit Suisse client data, published by a consortium of journalists in February as the “Suisse Secrets”. A parliamentary committee said it had struck down two motions seeking to ove…