Log Message:
youtube-dl: Update to 20210303

Changes:
20210303
--------
Extractors
* [youtube:tab] Switch continuation to browse API (#28289, #28327)
* [9c9media] Fix extraction for videos with multiple ContentPackages (#28309)
+ [bbc] Add support for BBC Reel videos (#21870, #23660, #28268)

20210302
--------
Extractors
* [zdf] Rework extractors (#11606, #13473, #17354, #21185, #26711, #27068,
  #27930, #28198, #28199, #28274)
    * Generalize cross-extractor video ids for zdf based extractors
    * Improve extraction
    * Fix 3sat and phoenix
* [stretchinternet] Fix extraction (#28297)
* [urplay] Fix episode data extraction (#28292)
+ [bandaichannel] Add support for b-ch.com (#21404)
* [srgssr] Improve extraction (#14717, #14725, #27231, #28238)
    + Extract subtitle
    * Fix extraction for new videos
    * Update srf download domains
* [vvvvid] Reduce season request payload size
+ [vvvvid] Extract series sublists playlist title (#27601, #27618)
+ [dplay] Extract Ad-Free uplynk URLs (#28160)
+ [wat] Detect DRM protected videos (#27958)
* [tf1] Improve extraction (#27980, #28040)
* [tmz] Fix and improve extraction (#24603, #24687, 28211)
+ [gedidigital] Add support for Gedi group sites (#7347, #26946)
* [youtube] Fix get_video_info request