Bump @discordjs/opus from 0.4.0 to 0.6.0

Bumps [@discordjs/opus](https://github.com/discordjs/opus) from 0.4.0 to 0.6.0.
- [Release notes](https://github.com/discordjs/opus/releases)
- [Commits](https://github.com/discordjs/opus/compare/v0.4.0...v0.6.0)

---
updated-dependencies:
- dependency-name: "@discordjs/opus"
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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