Bump karma because of security warning

Author: EddyVerbruggen

demo/package.json

@@ -23,9 +23,9 @@
     "extract-text-webpack-plugin": "~3.0.0",
     "filewalker": "0.1.2",
     "jasmine-core": "^2.8.0",
-    "karma": "^1.7.1",
-    "karma-jasmine": "^1.1.0",
-    "karma-nativescript-launcher": "^0.4.0",
+    "karma": "~3.0.0",
+    "karma-jasmine": "~1.1.2",
+    "karma-nativescript-launcher": "~0.4.0",
     "lazy": "1.0.11",
     "nativescript-css-loader": "~0.26.0",
     "nativescript-dev-typescript": "libs",