fix(package): update angulartics2 to version 4.2.0 (#337)

Author: greenkeeper[bot]

package.json

@@ -147,7 +147,7 @@
     "@ngx-meta/core": "^4.0.1",
     "angular2-jwt": "^0.2.3",
     "angularfire2": "^5.0.0-rc.3",
-    "angulartics2": "4.1.0",
+    "angulartics2": "4.2.0",
     "body-parser": "^1.18.2",
     "bunyan-middleware": "^0.8.0",
     "clean-css": "^4.1.9",