Bump @types/mocha from 8.2.0 to 9.0.0

Bumps [@types/mocha](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/mocha) from 8.2.0 to 9.0.0.
- [Release notes](https://github.com/DefinitelyTyped/DefinitelyTyped/releases)
- [Commits](https://github.com/DefinitelyTyped/DefinitelyTyped/commits/HEAD/types/mocha)

---
updated-dependencies:
- dependency-name: "@types/mocha"
  dependency-type: direct:development
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

package.json

@@ -48,7 +48,7 @@
     "@types/cron": "^1.6.1",
     "@types/express": "^4.16.0",
     "@types/express-session": "^1.17.0",
-    "@types/mocha": "^8.2.0",
+    "@types/mocha": "^9.0.0",
     "@types/mongodb": "^3.1.20",
     "@types/node": "^14.0.13",
     "@types/passport-http": "^0.3.8",