[release/6.0] Update dependencies from dotnet/icu dotnet/emsdk dotnet/runtime-assets...

[release/6.0] Update dependencies from dotnet/icu dotnet/emsdk dotnet/runtime-assets dotnet/arcade (#60495)

* Update dependencies from https://github.com/dotnet/runtime-assets build 20211015.1

Microsoft.DotNet.CilStrip.Sources , System.ComponentModel.TypeConverter.TestData , System.Drawing.Common.TestData , System.IO.Compression.TestData , System.IO.Packaging.TestData , System.Net.TestData , System.Private.Runtime.UnicodeData , System.Runtime.Numerics.TestData , System.Runtime.TimeZoneData , System.Security.Cryptography.X509Certificates.TestData , System.Windows.Extensions.TestData
 From Version 6.0.0-beta.21514.1 -> To Version 6.0.0-beta.21515.1

* Update dependencies from https://github.com/dotnet/arcade build 20211015.3

Microsoft.DotNet.XUnitExtensions , Microsoft.DotNet.VersionTools.Tasks , Microsoft.DotNet.Build.Tasks.Workloads , Microsoft.DotNet.Build.Tasks.Templating , Microsoft.DotNet.Build.Tasks.TargetFramework.Sdk , Microsoft.DotNet.Build.Tasks.Packaging , Microsoft.DotNet.Build.Tasks.Installers , Microsoft.DotNet.Build.Tasks.Feed , Microsoft.DotNet.Build.Tasks.Archives , Microsoft.DotNet.Arcade.Sdk , Microsoft.DotNet.ApiCompat , Microsoft.DotNet.CodeAnalysis , Microsoft.DotNet.XUnitConsoleRunner , Microsoft.DotNet.GenFacades , Microsoft.DotNet.GenAPI , Microsoft.DotNet.RemoteExecutor , Microsoft.DotNet.PackageTesting , Microsoft.DotNet.Helix.Sdk , Microsoft.DotNet.SharedFramework.Sdk
 From Version 6.0.0-beta.21514.2 -> To Version 6.0.0-beta.21515.3

* Update dependencies from https://github.com/dotnet/icu build 20211015.1

Microsoft.NETCore.Runtime.ICU.Transport
 From Version 6.0.0-rtm.21513.2 -> To Version 6.0.0-rtm.21515.1

* Update dependencies from https://github.com/dotnet/emsdk build 20211018.1

Microsoft.NET.Workload.Emscripten.Manifest-6.0.100
 From Version 6.0.0-rtm.21514.1 -> To Version 6.0.0

* Update dependencies from https://github.com/dotnet/emsdk build 20211018.2

Microsoft.NET.Workload.Emscripten.Manifest-6.0.100
 From Version 6.0.0-rtm.21514.1 -> To Version 6.0.0

* [wasm] Fix workload install for tests, with 6.0.0

Move to using the generated nuget.config, which has the feeds added by
darc. The target is a duplicate from
`src/installer/tests/PrepareTestAssets/PrepareTestAssets.proj`, and
should be moved to a common location in future.

Thanks to @lewing for the suggestion.

* [wasm] Remove unused bits

* Update dependencies from https://github.com/dotnet/runtime-assets build 20211018.1

Microsoft.DotNet.CilStrip.Sources , System.ComponentModel.TypeConverter.TestData , System.Drawing.Common.TestData , System.IO.Compression.TestData , System.IO.Packaging.TestData , System.Net.TestData , System.Private.Runtime.UnicodeData , System.Runtime.Numerics.TestData , System.Runtime.TimeZoneData , System.Security.Cryptography.X509Certificates.TestData , System.Windows.Extensions.TestData
 From Version 6.0.0-beta.21514.1 -> To Version 6.0.0-beta.21518.1

* Update dependencies from https://github.com/dotnet/arcade build 20211019.3

Microsoft.DotNet.XUnitExtensions , Microsoft.DotNet.VersionTools.Tasks , Microsoft.DotNet.Build.Tasks.Workloads , Microsoft.DotNet.Build.Tasks.Templating , Microsoft.DotNet.Build.Tasks.TargetFramework.Sdk , Microsoft.DotNet.Build.Tasks.Packaging , Microsoft.DotNet.Build.Tasks.Installers , Microsoft.DotNet.Build.Tasks.Feed , Microsoft.DotNet.Build.Tasks.Archives , Microsoft.DotNet.Arcade.Sdk , Microsoft.DotNet.ApiCompat , Microsoft.DotNet.CodeAnalysis , Microsoft.DotNet.XUnitConsoleRunner , Microsoft.DotNet.GenFacades , Microsoft.DotNet.GenAPI , Microsoft.DotNet.RemoteExecutor , Microsoft.DotNet.PackageTesting , Microsoft.DotNet.Helix.Sdk , Microsoft.DotNet.SharedFramework.Sdk
 From Version 6.0.0-beta.21514.2 -> To Version 6.0.0-beta.21519.3

Co-authored-by: dotnet-maestro[bot] <dotnet-maestro[bot]@users.noreply.github.com>
Co-authored-by: Ankit Jain <radical@gmail.com>
Co-authored-by: Matt Mitchell <mmitche@microsoft.com>