chore(package): update mocha to version 7.1.0

Closes #66

Author: greenkeeper[bot]

package.json

@@ -50,7 +50,7 @@
     "grunt-mocha": "^1.0.2",
     "grunt-mocha-test": "^0.13.2",
     "jshint-path-reporter": "^0.1.3",
-    "mocha": "^6.1.4",
+    "mocha": "^7.1.0",
     "mocha-unfunk-reporter": "^0.4.0",
     "requirejs": "^2.2.0"
   },