chore(package): update mocha to version 6.2.2

Closes #207

Author: greenkeeper[bot]

package.json

@@ -46,7 +46,7 @@
     "gulp-typescript": "5.0.1",
     "harmonize": "2.0.0",
     "inversify": "5.0.1",
-    "mocha": "6.2.0",
+    "mocha": "6.2.2",
     "publish-please": "5.5.1",
     "reflect-metadata": "0.1.13",
     "run-sequence": "2.2.1",