Bump video.js from 8.19.1 to 8.21.0

Bumps [video.js](https://github.com/videojs/video.js) from 8.19.1 to 8.21.0.
- [Release notes](https://github.com/videojs/video.js/releases)
- [Changelog](https://github.com/videojs/video.js/blob/main/CHANGELOG.md)
- [Commits](https://github.com/videojs/video.js/compare/v8.19.1...v8.21.0

)

---
updated-dependencies:
- dependency-name: video.js
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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