The old 6h values seem far too large and I cant recall nor find any good
justification for them to be that way
Reducing the timeouts to more sane values allow resources (WebSockets) to be
cleaned up faster
The heartbeat routine in bbb-webrtc-sfu runs every 20s. The heartbeat
routine in SIP.js/FS runs every 30(+10)s. The new timeouts are those values
multiplied by 3.