Autofix vulnerabilities in mocha

Author: kjetilk

package-lock.json

@@ -67,7 +67,7 @@
     "chai-as-promised": "^6.0.0",
     "dirty-chai": "^1.2.2",
     "localstorage-memory": "^1.0.2",
-    "mocha": "^3.3.0",
+    "mocha": "^5.2.0",
     "nyc": "^13.1.0",
     "sinon": "^2.1.0",
     "sinon-chai": "^2.9.0",