Bump @types/mocha from 7.0.2 to 8.0.0 (#238)

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)

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package.json

@@ -52,7 +52,7 @@
     "@rollup/plugin-commonjs": "^13.0.0",
     "@rollup/plugin-node-resolve": "^8.0.0",
     "@types/chai": "^4.2.4",
-    "@types/mocha": "^7.0.2",
+    "@types/mocha": "^8.0.0",
     "@typescript-eslint/eslint-plugin": "^2.5.0",
     "@typescript-eslint/parser": "^2.5.0",
     "banner-cli": "^0.14.1",