Fix cannot find System.Text.Json (#4668)

Author: nohwnd

eng/common/tools.ps1

@@ -263,7 +263,7 @@ function GetDotNetInstallScript([string] $dotnetRoot) {
   if (!(Test-Path $installScript)) {
     Create-Directory $dotnetRoot
     $ProgressPreference = 'SilentlyContinue' # Don't display the console progress UI - it's a huge perf hit
-    $uri = "https://dotnet.microsoft.com/download/dotnet/scripts/$dotnetInstallScriptVersion/dotnet-install.ps1"
+    $uri = "https://raw.githubusercontent.com/dotnet/install-scripts/main/src/dotnet-install.ps1"
 
     Retry({
       Write-Host "GET $uri"

src/package/Microsoft.TestPlatform/Microsoft.TestPlatform.csproj

@@ -93,7 +93,7 @@
     <ItemGroup>
       <MicrosoftCodeCoverageInstrumentationFiles Include="$(PkgMicrosoft_CodeCoverage_Instrumentation)\runtimes\win\native\*"></MicrosoftCodeCoverageInstrumentationFiles>
       <MicrosoftCodeCoverageIOFiles Include="$(PkgMicrosoft_CodeCoverage_IO)\lib\netstandard2.0\**\*"></MicrosoftCodeCoverageIOFiles>
-      <MicrosoftExtensionsDependencyModelFiles Include="$(PkgMicrosoft_Extensions_DependencyModel)\lib\netstandard2.0\*"></MicrosoftExtensionsDependencyModelFiles>
+      <MicrosoftExtensionsDependencyModelFiles Include="$(PkgMicrosoft_Extensions_DependencyModel)\lib\net451\*"></MicrosoftExtensionsDependencyModelFiles>
       <MicrosoftExtensionsFileSystemGlobbingFiles Include="$(PkgMicrosoft_Extensions_FileSystemGlobbing)\lib\netstandard2.0\*"></MicrosoftExtensionsFileSystemGlobbingFiles>
       <PlatformAbstractionsDepsJsonFiles Include="..\..\Microsoft.TestPlatform.PlatformAbstractions\bin\$(Configuration)\$(TargetFramework)\*.deps.json"></PlatformAbstractionsDepsJsonFiles>
       <PackageDepsJsonFiles Include="..\..\Microsoft.TestPlatform.PlatformAbstractions\bin\$(Configuration)\$(TargetFramework)\*.deps.json"></PackageDepsJsonFiles>