chore(deps): update dependency mocha to v9

Author: renovate-bot

package-lock.json

@@ -40,7 +40,7 @@
     "chai": "4.3.4",
     "eslint": "7.30.0",
     "eslint-config-defaults": "9.0.0",
-    "mocha": "8.4.0",
+    "mocha": "9.0.2",
     "ws": "7.5.2",
     "dummy-module": "*"
   },