Update dependency mocha to v9

Author: renovate-bot

package-lock.json

@@ -34,7 +34,7 @@
   "devDependencies": {
     "@tsconfig/node14": "1.0.0",
     "@types/chai": "4.2.15",
-    "@types/mocha": "8.2.1",
+    "@types/mocha": "9.1.1",
     "@types/node": "14.14.31",
     "@typescript-eslint/eslint-plugin": "4.15.1",
     "@typescript-eslint/parser": "4.15.1",
@@ -43,7 +43,7 @@
     "eslint": "7.20.0",
     "eslint-config-airbnb-base": "14.2.1",
     "eslint-plugin-import": "2.22.1",
-    "mocha": "8.3.0",
+    "mocha": "9.2.2",
     "ts-node": "9.1.1",
     "typedoc": "0.20.27",
     "typedoc-neo-theme": "1.1.0",