Bump Microsoft.CodeAnalysis.CSharp from 3.8.0 to 3.9.0

Bumps [Microsoft.CodeAnalysis.CSharp](https://github.com/dotnet/roslyn) from 3.8.0 to 3.9.0.
- [Release notes](https://github.com/dotnet/roslyn/releases)
- [Changelog](https://github.com/dotnet/roslyn/blob/master/docs/Breaking%20API%20Changes.md)
- [Commits](dotnet/roslyn@v3.8.0...v3.9.0)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

src/DaemonRunner/DaemonRunner/DaemonRunner.csproj

@@ -26,7 +26,7 @@
     <PackageReference Include="Microsoft.AspNetCore.Http" Version="2.2.2" />
     <PackageReference Include="Microsoft.AspNetCore.Mvc" Version="2.2.0" />
     <PackageReference Include="Microsoft.AspNetCore.Mvc.NewtonsoftJson" Version="5.0.3" />
-    <PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="3.8.0" />
+    <PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="3.9.0" />
     <PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="5.0.1" />
     <PackageReference Include="Microsoft.Extensions.Hosting" Version="5.0.0" />
     <PackageReference Include="Microsoft.Extensions.Http" Version="5.0.0" />