Bump nanoid and mocha

Removes [nanoid](https://github.com/ai/nanoid). It's no longer used after updating ancestor dependency [mocha](https://github.com/mochajs/mocha). These dependencies need to be updated together.


Removes `nanoid`

Updates `mocha` from 10.2.0 to 10.8.2
- [Release notes](https://github.com/mochajs/mocha/releases)
- [Changelog](https://github.com/mochajs/mocha/blob/main/CHANGELOG.md)
- [Commits](mochajs/mocha@v10.2.0...v10.8.2)

---
updated-dependencies:
- dependency-name: nanoid
  dependency-type: indirect
- dependency-name: mocha
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

package.json

@@ -10,7 +10,7 @@
     "@azure/avocado": "^0.6.2",
     "@types/js-yaml": "^3.12.1",
     "@types/mocha": "^5.2.7",
-    "mocha": "^10.2.0",
+    "mocha": "^10.8.2",
     "prettier": "^1.19.1",
     "ts-node": "^8.6.2",
     "typescript": "^3.7.3"