Bump @types/mocha from 2.2.48 to 8.0.0

Bumps [@types/mocha](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/mocha) from 2.2.48 to 8.0.0.
- [Release notes](https://github.com/DefinitelyTyped/DefinitelyTyped/releases)
- [Commits](https://github.com/DefinitelyTyped/DefinitelyTyped/commits/HEAD/types/mocha)

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

package.json

@@ -51,7 +51,7 @@
     "@types/graphql": "^0.8.6",
     "@types/jest": "^18.1.1",
     "@types/marked": "0.0.27",
-    "@types/mocha": "^2.2.32",
+    "@types/mocha": "^8.0.0",
     "@types/mustache": "^0.8.28",
     "@types/node": "^6.0.32",
     "@types/request": "^2.47.0",