Updated PMD version to 6.20.0
Updated PMD version to 6.20.0

lgoldstein/mina-sshd,apache/mina-sshd,apache/mina-sshd,lgoldstein/mina-sshd,lgoldstein/mina-sshd,apache/mina-sshd,apache/mina-sshd,lgoldstein/mina-sshd