Bump ws and grunt-contrib-qunit

Bumps [ws](https://github.com/websockets/ws) to 8.18.0 and updates ancestor dependency [grunt-contrib-qunit](https://github.com/gruntjs/grunt-contrib-qunit). These dependencies need to be updated together.


Updates `ws` from 8.14.2 to 8.18.0
- [Release notes](https://github.com/websockets/ws/releases)
- [Commits](websockets/ws@8.14.2...8.18.0)

Updates `grunt-contrib-qunit` from 8.0.1 to 10.0.0
- [Release notes](https://github.com/gruntjs/grunt-contrib-qunit/releases)
- [Changelog](https://github.com/gruntjs/grunt-contrib-qunit/blob/main/CHANGELOG)
- [Commits](gruntjs/grunt-contrib-qunit@v8.0.1...v10.0.0)

---
updated-dependencies:
- dependency-name: ws
  dependency-type: indirect
- dependency-name: grunt-contrib-qunit
  dependency-type: direct:development
...

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