v12.0.11-canary.21

Core Changes

• Allow reading request bodies in middlewares: #34294
• Revert "Allow reading request bodies in middlewares": #34479
• update webpack: #34477
• Fix chunk buffering for server components: #34474
• Remove deprecation for relative URL usage in middlewares: #34461

Documentation Changes

• Remove hello world RSC example.: #34456
• Fix typo: #34480

Example Changes

• fix: don't wrap profile in firebase example: #34457

Misc Changes

• Update font-optimization test snapshot: #34478

Credits

Huge thanks to @leerob, @balazsorban44, @Schniz, @sokra, and @shuding for helping!