build(deps): bump third-party/youtube-dl from e1b3fa2 to c509896 (#489)

Bumps [third-party/youtube-dl](https://github.com/ytdl-org/youtube-dl) from `e1b3fa2` to `c509896`.
- [Release notes](https://github.com/ytdl-org/youtube-dl/releases)
- [Commits](ytdl-org/youtube-dl@e1b3fa2...c509896)

---
updated-dependencies:
- dependency-name: third-party/youtube-dl
  dependency-type: direct:production
...

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Author: dependabot[bot]