v18.8.0

What's Changed

• Migrate from Newtonsoft.Json to System.Text.Json / Jsonite (merge to main) by @nohwnd in #15687
  • For more detail refer to https://devblogs.microsoft.com/dotnet/vs-test-is-removing-its-newtonsoft-json-dependency/
• Create source-only filter package by @Youssef1313 in #15638
• Add ARM64 msdia140.dll support to test platform packages by @nohwnd in #15692
• Fix mutex cleanup crash on macOS/Linux by @nohwnd in #15684
• Restrict artifact temp directory permissions on Unix by @nohwnd in #15729
• Add support for filtering uncategorized tests with TestCategory=None by @Evangelink in #15727
• Fix SCI binding failure in DTA hosts (main) by @nohwnd in #15724
• Fix HTML logger parallel file collision by @nohwnd in #15435
• Improve error message when testhost cannot be found by @nohwnd in #16053
• Fix HTML logger exception on invalid XML chars in test display names by @nohwnd in #16051

Full Changelog: v18.7.0...v18.8.0