Bump billboard.js from 3.17.2 to 3.18.0

Bumps [billboard.js](https://github.com/naver/billboard.js) from 3.17.2 to 3.18.0.
- [Release notes](https://github.com/naver/billboard.js/releases)
- [Changelog](https://github.com/naver/billboard.js/blob/master/CHANGELOG.md)
- [Commits](naver/billboard.js@3.17.2...3.18.0)

---
updated-dependencies:
- dependency-name: billboard.js
  dependency-version: 3.18.0
  dependency-type: indirect
...

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Author: dependabot[bot]