Update dependencies from https://github.com/dotnet/runtime-assets build 20230821...

Update dependencies from https://github.com/dotnet/runtime-assets build 20230821.1 (#90872)

Microsoft.DotNet.CilStrip.Sources , System.ComponentModel.TypeConverter.TestData , System.Data.Common.TestData , System.Drawing.Common.TestData , System.Formats.Tar.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.Text.RegularExpressions.TestData , System.Windows.Extensions.TestData
 From Version 8.0.0-beta.23408.1 -> To Version 8.0.0-beta.23421.1

Co-authored-by: dotnet-maestro[bot] <dotnet-maestro[bot]@users.noreply.github.com>
Co-authored-by: Larry Ewing <lewing@microsoft.com>