Update to Smack 4.2.1
Update to Smack 4.2.1

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