chore(deps): update dependency mocha to v8.4.0

Author: renovate-bot

package-lock.json

@@ -61,7 +61,7 @@
     "chai": "4.3.4",
     "chai-as-promised": "7.1.1",
     "coveralls": "3.1.0",
-    "mocha": "8.3.2",
+    "mocha": "8.4.0",
     "nyc": "15.1.0",
     "source-map-support": "0.5.19",
     "ts-node": "9.1.1",