chore(package): update mocha to version 7.1.2

Closes #42

Author: greenkeeper[bot]

package.json

@@ -41,7 +41,7 @@
 		"gulp": "3.9.1",
 		"gulp-eslint": "4.0.2",
 		"gulp-mocha": "5.0.0",
-		"mocha": "5.1.1",
+		"mocha": "7.1.2",
 		"run-sequence": "2.2.1"
 	},
 	"scripts": {