chore(package): update mocha to version 7.2.0

Closes #117

Author: greenkeeper[bot]

package.json

@@ -74,6 +74,6 @@
     "ejs": "^2.6.2",
     "js-beautify": "^1.6.4",
     "jshint": "^2.9.3",
-    "mocha": "^5.0.0"
+    "mocha": "^7.2.0"
   }
 }