Update proxy-lib to 0.4.0 (#3311)

Update proxy-lib to latest version - 0.4.0 - the major change in this version is that it allows using it without having Visual C++ redistributable installed on the users Windows machine.

Author: rosen-vladimirov

npm-shrinkwrap.json

@@ -63,7 +63,7 @@
     "plistlib": "0.2.1",
     "progress-stream": "1.1.1",
     "properties-parser": "0.2.3",
-    "proxy-lib": "0.2.0",
+    "proxy-lib": "0.4.0",
     "qr-image": "3.2.0",
     "request": "2.81.0",
     "semver": "5.3.0",