[main] Update dependencies from dotnet/roslyn (#12777)

This pull request updates the following dependencies

[marker]: <> (Begin:8a4332aa-2543-4c51-b941-e73f31e22328)
## From https://github.com/dotnet/roslyn
- **Subscription**:
[8a4332aa-2543-4c51-b941-e73f31e22328](https://maestro.dot.net/subscriptions?search=8a4332aa-2543-4c51-b941-e73f31e22328)
- **Build**:
[20251114.6](https://dev.azure.com/dnceng/internal/_build/results?buildId=2839131)
([290958](https://maestro.dot.net/channel/548/github:dotnet:roslyn/build/290958))
- **Date Produced**: November 14, 2025 8:09:30 PM UTC
- **Commit**:
[fb3fc8afd3352d56135fd50f9aab5bd0e2395573](dotnet/roslyn@fb3fc8a)
- **Branch**: [main](https://github.com/dotnet/roslyn/tree/main)

[DependencyUpdate]: <> (Begin)

- **Dependency Updates**:
  - From [5.3.0-2.25559.1 to 5.3.0-2.25564.6][1]
     - Microsoft.Net.Compilers.Toolset

[1]: dotnet/roslyn@b28fc31...fb3fc8a

[DependencyUpdate]: <> (End)


[marker]: <> (End:8a4332aa-2543-4c51-b941-e73f31e22328)

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

Author: dotnet-maestro[bot]

eng/Version.Details.props

@@ -29,7 +29,7 @@ This file should be imported by eng/Versions.props
     <!-- nuget/nuget.client dependencies -->
     <NuGetBuildTasksPackageVersion>7.0.0-rc.288</NuGetBuildTasksPackageVersion>
     <!-- dotnet/roslyn dependencies -->
-    <MicrosoftNetCompilersToolsetPackageVersion>5.3.0-2.25559.1</MicrosoftNetCompilersToolsetPackageVersion>
+    <MicrosoftNetCompilersToolsetPackageVersion>5.3.0-2.25564.6</MicrosoftNetCompilersToolsetPackageVersion>
   </PropertyGroup>
   <!--Property group for alternate package version names-->
   <PropertyGroup>

eng/Version.Details.xml

@@ -114,9 +114,9 @@
       <Uri>https://github.com/nuget/nuget.client</Uri>
       <Sha>5514d935e3e77d90d931758cf9e2589735b905a3</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.Net.Compilers.Toolset" Version="5.3.0-2.25559.1">
+    <Dependency Name="Microsoft.Net.Compilers.Toolset" Version="5.3.0-2.25564.6">
       <Uri>https://github.com/dotnet/roslyn</Uri>
-      <Sha>b28fc311e384c959fba1fea1ede591a1552c2c1e</Sha>
+      <Sha>fb3fc8afd3352d56135fd50f9aab5bd0e2395573</Sha>
     </Dependency>
     <Dependency Name="Microsoft.DotNet.XUnitExtensions" Version="10.0.0-beta.25555.6">
       <Uri>https://github.com/dotnet/arcade</Uri>