Bump ws in /tests/builds/webpack

Bumps  and [ws](https://github.com/websockets/ws). These dependencies needed to be updated together.

Updates `ws` from 8.13.0 to 8.20.1
- [Release notes](https://github.com/websockets/ws/releases)
- [Commits](websockets/ws@8.13.0...8.20.1)

Updates `ws` from 7.5.9 to 7.5.10
- [Release notes](https://github.com/websockets/ws/releases)
- [Commits](websockets/ws@8.13.0...8.20.1)

---
updated-dependencies:
- dependency-name: ws
  dependency-version: 8.20.1
  dependency-type: indirect
- dependency-name: ws
  dependency-version: 7.5.10
  dependency-type: indirect
...

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Author: dependabot[bot]