[vs17.9] Update dependencies from nuget/nuget.client dotnet/roslyn (#9557)

* Update dependencies from https://github.com/nuget/nuget.client build 6.9.0.64

NuGet.Build.Tasks
 From Version 6.9.0-preview.1.50 -> To Version 6.9.0-preview.1.64

* Update dependencies from https://github.com/dotnet/roslyn build 20231215.7

Microsoft.Net.Compilers.Toolset
 From Version 4.9.0-3.23608.9 -> To Version 4.9.0-3.23615.7

---------

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

Author: dotnet-maestro[bot]

eng/Version.Details.xml

@@ -76,13 +76,13 @@
       <Sha>73f0850939d96131c28cf6ea6ee5aacb4da0083a</Sha>
       <SourceBuild RepoName="xliff-tasks" ManagedOnly="true" />
     </Dependency>
-    <Dependency Name="NuGet.Build.Tasks" Version="6.9.0-preview.1.50">
+    <Dependency Name="NuGet.Build.Tasks" Version="6.9.0-preview.1.64">
       <Uri>https://github.com/nuget/nuget.client</Uri>
-      <Sha>a59e64507383b64bcfbe9bf63b34aca946ab0da9</Sha>
+      <Sha>2a234707a663f731e4de93cba4014ed1a8259def</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.Net.Compilers.Toolset" Version="4.9.0-3.23608.9">
+    <Dependency Name="Microsoft.Net.Compilers.Toolset" Version="4.9.0-3.23615.7">
       <Uri>https://github.com/dotnet/roslyn</Uri>
-      <Sha>8e4ab418a8f9703f7dfe3a66adc9b3876ef9382f</Sha>
+      <Sha>6a1cfc22d6b40c4e0fe5ac98a77a251c987a7c51</Sha>
       <SourceBuild RepoName="roslyn" ManagedOnly="true" />
     </Dependency>
     <Dependency Name="Microsoft.DotNet.XUnitExtensions" Version="8.0.0-beta.23580.1">

eng/Versions.props

@@ -52,8 +52,8 @@
     <MicrosoftDotNetXUnitExtensionsVersion>8.0.0-beta.23580.1</MicrosoftDotNetXUnitExtensionsVersion>
     <MicrosoftExtensionsDependencyModelVersion>7.0.0</MicrosoftExtensionsDependencyModelVersion>
     <MicrosoftIORedistVersion>6.0.0</MicrosoftIORedistVersion>
-    <MicrosoftNetCompilersToolsetVersion>4.9.0-3.23608.9</MicrosoftNetCompilersToolsetVersion>
-    <NuGetBuildTasksVersion>6.9.0-preview.1.50</NuGetBuildTasksVersion>
+    <MicrosoftNetCompilersToolsetVersion>4.9.0-3.23615.7</MicrosoftNetCompilersToolsetVersion>
+    <NuGetBuildTasksVersion>6.9.0-preview.1.64</NuGetBuildTasksVersion>
     <SystemRuntimeCompilerServicesUnsafeVersion>6.0.0</SystemRuntimeCompilerServicesUnsafeVersion>
     <SystemTextJsonVersion>8.0.0</SystemTextJsonVersion>
   </PropertyGroup>