chore(deps): update dependency @types/mocha to v9 (#408)

Co-authored-by: Renovate Bot <[email protected]>

Author: renovate[bot]

package.json

@@ -48,7 +48,7 @@
   "license": "ISC",
   "devDependencies": {
     "@types/chai": "^4.2.11",
-    "@types/mocha": "^8.0.0",
+    "@types/mocha": "^9.0.0",
     "@types/node": "^14.0.0",
     "@typescript-eslint/eslint-plugin": "^3.10.1",
     "@typescript-eslint/parser": "^3.10.1",