Bump prettier in /packages/npm-packages/ruby-wasm-wasi

Bumps [prettier](https://github.com/prettier/prettier) from 2.7.1 to 2.8.1.
- [Release notes](https://github.com/prettier/prettier/releases)
- [Changelog](https://github.com/prettier/prettier/blob/main/CHANGELOG.md)
- [Commits](prettier/prettier@2.7.1...2.8.1)

---
updated-dependencies:
- dependency-name: prettier
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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Author: dependabot[bot]