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fix http/2 header payload padding parsing (#65729)
Removing unsafe code in BufferExtensions (#57417)
Declare readonly members for mutable structs (#39637)
Add an explanatory comment to DuplexPipe (#56863)
Use inbox `TaskToAsyncResult` class and remove `TaskToApm`. (#68139)
Use System.Threading.Lock in Kestrel (#57236)
Use SearchValues/ContainsAny/span helpers in more places (#67018)
Use file scoped namespaces (#38076)
Generalize Http2Cat #14894 (#17438)
Opt pooled async methods out of runtime async (#67190)
Add rule to seal internal and private types (#41457)
Fix typos in code. (#67428)