Bump yt-dlp from 2026.3.17 to 2026.6.9 (#1475)

Bumps [yt-dlp](https://github.com/yt-dlp/yt-dlp) from 2026.3.17 to 2026.6.9.
- [Release notes](https://github.com/yt-dlp/yt-dlp/releases)
- [Changelog](https://github.com/yt-dlp/yt-dlp/blob/master/Changelog.md)
- [Commits](https://github.com/yt-dlp/yt-dlp/compare/2026.03.17...2026.06.09)

---
updated-dependencies:
- dependency-name: yt-dlp
  dependency-version: 2026.6.9
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

pyproject.toml

@@ -15,7 +15,7 @@ classifiers = [
     "Programming Language :: Python :: 3.11",
 ]
 dependencies = [
-    "yt-dlp[default]==2026.3.17",
+    "yt-dlp[default]==2026.6.9",
     "colorama~=0.4",
     "mergedeep~=1.3",
     "mediafile~=0.12",