chore(deps-dev): bump @types/mocha from 7.0.2 to 8.0.0

Bumps [@types/mocha](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/mocha) from 7.0.2 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

@@ -54,7 +54,7 @@
   },
   "devDependencies": {
     "@types/chai": "^4.1.3",
-    "@types/mocha": "^7.0.1",
+    "@types/mocha": "^8.0.0",
     "@types/node": "^14.0.1",
     "chai": "^4.1.2",
     "chai-as-promised": "^7.1.1",