chore(deps-dev): bump @types/mocha from 7.0.2 to 8.2.2

Bumps [@types/mocha](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/mocha) from 7.0.2 to 8.2.2.
- [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

@@ -37,7 +37,7 @@
     "@types/datastore-core": "^0.7.0",
     "@types/interface-datastore": "^0.8.0",
     "@types/lexicographic-integer": "^1.1.0",
-    "@types/mocha": "^7.0.1",
+    "@types/mocha": "^8.2.2",
     "@types/node": "^13.1.2",
     "@typescript-eslint/eslint-plugin": "^2.9.0",
     "@typescript-eslint/parser": "^2.9.0",