Bump ws and @wordpress/scripts

Bumps [ws](https://github.com/websockets/ws) to 8.18.2 and updates ancestor dependency [@wordpress/scripts](https://github.com/WordPress/gutenberg/tree/HEAD/packages/scripts). These dependencies need to be updated together.


Updates `ws` from 8.5.0 to 8.18.2
- [Release notes](https://github.com/websockets/ws/releases)
- [Commits](websockets/ws@8.5.0...8.18.2)

Updates `@wordpress/scripts` from 26.2.0 to 30.15.0
- [Release notes](https://github.com/WordPress/gutenberg/releases)
- [Changelog](https://github.com/WordPress/gutenberg/blob/trunk/packages/scripts/CHANGELOG.md)
- [Commits](https://github.com/WordPress/gutenberg/commits/@wordpress/scripts@30.15.0/packages/scripts)

---
updated-dependencies:
- dependency-name: ws
  dependency-version: 8.18.2
  dependency-type: indirect
- dependency-name: "@wordpress/scripts"
  dependency-version: 30.15.0
  dependency-type: direct:development
...

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Author: dependabot[bot]