Bump MSTest from 3.6.3 to 3.6.4 in /docs/core/testing/snippets/testcontext/csharp in the dotnet group#43910

dotnet-policy-service[bot] merged 1 commit intomaindotnet/docs:mainfrom

dependabot/nuget/docs/core/testing/snippets/testcontext/csharp/dotnet-371bd2badfdotnet/docs:dependabot/nuget/docs/core/testing/snippets/testcontext/csharp/dotnet-371bd2badfCopy head branch name to clipboard