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

Author: renovate-bot

package-lock.json

@@ -223,7 +223,7 @@
   "devDependencies": {
     "@types/capitalize": "2.0.0",
     "@types/dotenv": "8.2.0",
-    "@types/mocha": "5.2.7",
+    "@types/mocha": "9.1.0",
     "@types/node": "16.11.12",
     "@types/node-fetch": "3.0.3",
     "@types/vscode": "1.62.0",