Merge pull request dotnet#6160 from dotnet/apr

Release artifacts for April

Merge pull request dotnet#6142 from dotnet/rbhanda-patch-3

Update 6.0.0-preview.3.md

Merge pull request dotnet#6132 from dotnet/rbhanda-patch-3

Update 5.0.5.md

Merge pull request dotnet#6058 from dotnet/rbhanda-patch-4

Update 6.0.0-preview.2.md

Merge pull request dotnet#6044 from dotnet/leecow-patch

remove rhel6 from 3.1.12 release

Merge pull request dotnet#6044 from dotnet/leecow-patch

remove rhel6 from 3.1.12 release

Merge pull request dotnet#5969 from dotnet/rbhanda-patch-3

Update README.md

Merge pull request dotnet#5933 from dotnet/rbhanda-patch-2

Update 5.0.3.md

Merge pull request dotnet#5933 from dotnet/rbhanda-patch-2

Update 5.0.3.md

Merge pull request dotnet#5933 from dotnet/rbhanda-patch-2

Update 5.0.3.md