chore(package): update nyc to version 12.0.2

Closes #4804

Author: greenkeeper[bot]

package.json

@@ -63,7 +63,7 @@
     "jasmine-spec-reporter": "^4.1.0",
     "mongodb-runner": "3.6.1",
     "nodemon": "1.17.5",
-    "nyc": "^11.0.2",
+    "nyc": "^12.0.2",
     "request-promise": "4.2.2"
   },
   "scripts": {