Updates ice4j to 2.0.0-20181213.100259-20.
Updates ice4j to 2.0.0-20181213.100259-20.

Fixes tests, after updating libjitsi.

gpolitis/jitsi-videobridge,jitsi/jitsi-videobridge,jitsi/jitsi-videobridge,gpolitis/jitsi-videobridge,jitsi/jitsi-videobridge,jitsi/jitsi-videobridge,gpolitis/jitsi-videobridge,jitsi/jitsi-videobridge,jitsi/jitsi-videobridge,jitsi/jitsi-videobridge