chore(package): update mocha to version 7.0.1

Author: greenkeeper[bot]

package.json

@@ -27,7 +27,7 @@
     "karma-mocha-reporter": "^2.0.4",
     "karma-sourcemap-loader": "^0.3.7",
     "karma-webpack": "^4.0.2",
-    "mocha": "^6.0.0",
+    "mocha": "^7.0.1",
     "npm-run-all": "^4.1.2",
     "text-encoding": "^0.7.0",
     "webpack": "^4.41.1",