Update BenchmarkDotNet and add Http2Connection benchmark #19482
Merged
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Adds a high-level Http2Connection benchmark
I found that BenchmarkDotNet was not correctly measuring allocations, I'm guessing because they're happening in the connection event loop thread and not the benchmark thread.
Our BenchmarkDotNet version is over two years old. Updating it to the latest version correctly measures allocations.
Does BenchmarkDotNet in this repo have any external callers?