chore(deps): update dependency mocha to v4.1.0

Author: renovate-bot

package-lock.json

@@ -38,7 +38,7 @@
     "@types/power-assert": "1.4.29",
     "assert-rejects": "0.1.1",
     "jscpd": "0.6.17",
-    "mocha": "4.0.1",
+    "mocha": "4.1.0",
     "nyc": "11.4.1",
     "power-assert": "1.4.4",
     "rimraf": "2.6.2"