heroku/v436

Deploy 0ba2dbc

Diff: heroku/v432...heroku/v436

• Handle instagram 404 error.
• Update gems.
• Ruby 2.7.3
• cached_data can also be nil here.
• Do not reports OPTIONS errors.
• Strip invalid characters from input.
• Return a better error if the video is restricted to subscribers.
• Update Referrer-Policy to strict-origin-when-cross-origin.
• Make sure @@session_id is set to nil.
• Support more YouTube URLs.
• Update Facebook video embed code.
• Update Spotify embed code.