Add blog posts to release notes
Add blog posts to release notes

PiperOrigin-RevId: 332940209

androidx/media,amzn/exoplayer-amazon-port,ened/ExoPlayer,ened/ExoPlayer,google/ExoPlayer,androidx/media,google/ExoPlayer,androidx/media,google/ExoPlayer,amzn/exoplayer-amazon-port,amzn/exoplayer-amazon-port,ened/ExoPlayer