chore(package): update mocha to version 7.1.1

Closes #37

Author: greenkeeper[bot]

packages/extra/package.json

@@ -56,7 +56,7 @@
     "karma-sauce-launcher": "^2.0.2",
     "karma-sourcemap-loader": "^0.3.7",
     "karma-webpack": "^3.0.5",
-    "mocha": "^6.0.2",
+    "mocha": "^7.1.1",
     "nyc": "^13.3.0",
     "phantomjs-prebuilt": "^2.1.16",
     "uglifyjs-webpack-plugin": "^2.1.2",