Upgrade Roslyn for C#13 / .NET 9

Author: jods4

Src/RecastCSharp.csproj

@@ -3,7 +3,7 @@
   <PropertyGroup>
     <OutputType>Exe</OutputType>
     <TargetFramework>net80</TargetFramework>
-    <Version>3.3.3</Version>
+    <Version>3.4.0</Version>
     <PackageLicenseExpression>MIT</PackageLicenseExpression>
     <Nullable>enable</Nullable>
     <WarningsAsErrors>nullable</WarningsAsErrors>
@@ -19,9 +19,9 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.Build.Locator" Version="1.6.10" />
-    <PackageReference Include="Microsoft.CodeAnalysis.CSharp.Workspaces" Version="4.8.0" />
-    <PackageReference Include="Microsoft.CodeAnalysis.Workspaces.MSBuild" Version="4.8.0" />
+    <PackageReference Include="Microsoft.Build.Locator" Version="1.7.8" />
+    <PackageReference Include="Microsoft.CodeAnalysis.CSharp.Workspaces" Version="4.12.0" />
+    <PackageReference Include="Microsoft.CodeAnalysis.Workspaces.MSBuild" Version="4.12.0" />
     <PackageReference Include="Microsoft.Extensions.FileSystemGlobbing" Version="8.0.0" />
     <PackageReference Include="Polly" Version="7.2.3" />
     <PackageReference Include="Scriban" Version="5.9.0" />