build(deps): bump ws and @web/test-runner

Bumps [ws](https://github.com/websockets/ws) to 7.5.10 and updates ancestor dependency [@web/test-runner](https://github.com/modernweb-dev/web/tree/HEAD/packages/test-runner). These dependencies need to be updated together.


Updates `ws` from 8.13.0 to 7.5.10
- [Release notes](https://github.com/websockets/ws/releases)
- [Commits](websockets/ws@8.13.0...7.5.10)

Updates `@web/test-runner` from 0.17.0 to 0.20.2
- [Release notes](https://github.com/modernweb-dev/web/releases)
- [Changelog](https://github.com/modernweb-dev/web/blob/master/packages/test-runner/CHANGELOG.md)
- [Commits](https://github.com/modernweb-dev/web/commits/@web/[email protected]/packages/test-runner)

---
updated-dependencies:
- dependency-name: ws
  dependency-version: 7.5.10
  dependency-type: indirect
- dependency-name: "@web/test-runner"
  dependency-version: 0.20.2
  dependency-type: direct:development
...

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

Author: dependabot[bot]