chore(deps): update dependency mocha to v6.2.3

Author: renovate-bot

app/templates/package.json

@@ -28,7 +28,7 @@
     "chai": "4.2.0",
     "chance": "1.1.4",
     "husky": "3.1.0",
-    "mocha": "6.2.2",
+    "mocha": "6.2.3",
     "nyc": "14.1.1",
     "proxyquire": "2.1.3",
     "sinon": "7.5.0"