build(deps): updated socket.io version to fix security issues with socket.io-parser and engine.io

A specially crafted Sokcet.IO packet can trigger an uncaught exception on Sokcet.IO Server , thus killing the Node.js process.
Similarly, a specially crafted HTTP request can trigger an uncaught exception on the Engine.IO server, thus killing the Node.js process.
These are potential security risks which are introduced by using [email protected] and need to be addressed in order to maintain the security of applications using karma.

Author: sharmanikhil04