Upgrade dependencies to 6.4.0 and rpc-5.1.1
Upgrade dependencies to 6.4.0 and rpc-5.1.1

Change-Id: I90cccbe5b3b6777a22dbeecf0ba7317d198d7508

Kurento/kurento-client-js,Kurento/kurento-client-js,Kurento/kurento-client-js