ytdl-sub 2026.02.23

Bump yt-dlp[default] from 2026.2.4 to 2026.2.21 (#1438)

Bumps yt-dlp[default] from 2026.2.4 to 2026.2.21.

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---

updated-dependencies:

• dependency-name: yt-dlp[default]
  dependency-version: 2026.2.21
  dependency-type: direct:production
  update-type: version-update:semver-patch
  ...

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