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

Author: renovate-bot

package-lock.json

@@ -59,7 +59,7 @@
     "generate-changelog": "1.8.0",
     "husky": "4.3.8",
     "lint-staged": "10.5.4",
-    "mocha": "8.3.2",
+    "mocha": "8.4.0",
     "nock": "13.0.11",
     "prettier": "2.2.1",
     "rimraf": "3.0.2",