[npm]: Bump @distube/ytdl-core from 4.14.4 to 4.15.8

Bumps [@distube/ytdl-core](https://github.com/distubejs/ytdl-core) from 4.14.4 to 4.15.8.
- [Release notes](https://github.com/distubejs/ytdl-core/releases)
- [Commits](distubejs/ytdl-core@4.14.4...4.15.8)

---
updated-dependencies:
- dependency-name: "@distube/ytdl-core"
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>