Update to kotlin 1.3.71. (#1196)
Update to kotlin 1.3.71. (#1196)

* Bump jitsi-utils, jitsi-rtp, jicofo, and jitsi-media-bridge versions.
jitsi/jitsi-videobridge,jitsi/jitsi-videobridge,jitsi/jitsi-videobridge,gpolitis/jitsi-videobridge,jitsi/jitsi-videobridge,gpolitis/jitsi-videobridge,jitsi/jitsi-videobridge,jitsi/jitsi-videobridge,gpolitis/jitsi-videobridge,jitsi/jitsi-videobridge