refactor(connector): [BILLWERK, FISERVEMEA, TSYS] use LazyLock instead of lazy_static (#7494)
Co-authored-by: Anurag Singh <anurag.singh.001@Anurag-Singh-WPMHJ5619X.local>
Co-authored-by: Anurag Singh <anurag.singh.001@AnuragSMHJ5619X.lan>
Co-authored-by: Anurag Singh <anurag.singh.001@MacBookPro.lan>
Co-authored-by: DEEPANSHU BANSAL <41580413+deepanshu-iiitu@users.noreply.github.com>