Bump @types/mocha from 7.0.2 to 8.2.1 (#178)

Bumps [@types/mocha](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/mocha) from 7.0.2 to 8.2.1.
- [Release notes](https://github.com/DefinitelyTyped/DefinitelyTyped/releases)
- [Commits](https://github.com/DefinitelyTyped/DefinitelyTyped/commits/HEAD/types/mocha)

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

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

package.json

@@ -119,7 +119,7 @@
     "@types/graceful-fs": "^4.1.4",
     "@types/json5": "^0.0.30",
     "@types/minimatch": "^3.0.3",
-    "@types/mocha": "^7.0.2",
+    "@types/mocha": "^8.2.1",
     "@types/node": "^14.14.27",
     "@types/yargs": "^15.0.10",
     "gts": "^1.1.2",