main
Use file scoped namespaces (#38076)
Fix failing test on machine using en-GB (#41534)
Changed default server for samples from IIS Express to Kestrel (#29517)
Made the encodings of .razor and .cshtml files in the repo consistent (#23502)
Fix transitive framework references in sample projects (#65560)
Add [Obsolete] attribute to WebHost, IWebHost, and WebHostService
Merge branch 'release/2.1' into release/2.2