chore(package): update nyc to version 13.3.0

Closes #14

Author: greenkeeper[bot]

package.json

@@ -47,7 +47,7 @@
     "cross-env": "^5.1.5",
     "inversify": "^4.13.0",
     "npm-run-all": "^4.1.3",
-    "nyc": "^12.0.1",
+    "nyc": "^13.3.0",
     "protractor": "^5.3.2",
     "rxjs": "^5.5.10",
     "shelljs": "0.8.2",