GHSA-rp42-5vxx-qpwr: basic-ftp vulnerable to denial of service via unbounded memory consumption in Client.list()

basic-ftp@5.2.2 is vulnerable to denial of service through unbounded memory growth while processing directory listings from a remote FTP server. A malicious or compromised server can send an extremely large or never-ending listing response to Client.list(), causing the client process to consume memory until it becomes unstable or crashes.