Update njrat.txt
Update njrat.txt

Moving to ```revengerat``` + dedup of ```IP:port``` : https://github.com/stamparm/maltrail/pull/12046/commits/88398d61165452b8b96dc78b4d38c3008fb39d42
stamparm/maltrail,stamparm/maltrail,stamparm/maltrail,stamparm/maltrail