Bump Microsoft.CodeAnalysis.CSharp from 4.11.0 to 4.12.0

Bumps [Microsoft.CodeAnalysis.CSharp](https://github.com/dotnet/roslyn) from 4.11.0 to 4.12.0.
- [Release notes](https://github.com/dotnet/roslyn/releases)
- [Changelog](https://github.com/dotnet/roslyn/blob/main/docs/Breaking%20API%20Changes.md)
- [Commits](https://github.com/dotnet/roslyn/commits)

---
updated-dependencies:
- dependency-name: Microsoft.CodeAnalysis.CSharp
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

Directory.Packages.props

@@ -3,14 +3,14 @@
   <PropertyGroup>
     <ManagePackageVersionsCentrally>true</ManagePackageVersionsCentrally>
     <MicrosoftBuildPackageVersion>17.12.6</MicrosoftBuildPackageVersion>
-    <MicrosoftBuildPackageVersion Condition="'$(TargetFramework)' == 'net8.0' ">17.11.4</MicrosoftBuildPackageVersion>
+    <MicrosoftBuildPackageVersion Condition="'$(TargetFramework)' == 'net8.0' ">17.12.6</MicrosoftBuildPackageVersion>
     <SystemTextJsonVersion>9.0.0</SystemTextJsonVersion>
   </PropertyGroup>
   <ItemGroup>
     <PackageVersion Include="AssemblyShader" Version="1.0.3-preview" />
     <PackageVersion Include="Microsoft.Build" Version="$(MicrosoftBuildPackageVersion)" />
     <PackageVersion Include="Microsoft.Build.Utilities.Core" Version="$(MicrosoftBuildPackageVersion)" />
-    <PackageVersion Include="Microsoft.CodeAnalysis.CSharp" Version="4.11.0" />
+    <PackageVersion Include="Microsoft.CodeAnalysis.CSharp" Version="4.12.0" />
     <PackageVersion Include="Microsoft.CodeAnalysis.PublicApiAnalyzers" Version="3.3.4" />
     <PackageVersion Include="Microsoft.IO.Redist" Version="6.1.0" />
     <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />