Fix: Bump JMT: Expire RtpPacketCache objects after 15 seconds. (#1673)
Fix: Bump JMT: Expire RtpPacketCache objects after 15 seconds. (#1673)

Should prevent crashes after JVB uses up all its heap.
jitsi/jitsi-videobridge,jitsi/jitsi-videobridge,gpolitis/jitsi-videobridge,gpolitis/jitsi-videobridge,jitsi/jitsi-videobridge,gpolitis/jitsi-videobridge,jitsi/jitsi-videobridge,jitsi/jitsi-videobridge,jitsi/jitsi-videobridge,jitsi/jitsi-videobridge