Update the nugets used by the generator

Author: mattleibow

nuget.config

@@ -5,7 +5,5 @@
     <add key="dotnet-public" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-public/nuget/v3/index.json" />
     <add key="dotnet6" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet6/nuget/v3/index.json" />
     <add key="dotnet-eng" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-eng/nuget/v3/index.json" />
-    <add key="darc-pub-dotnet-runtime-3ba4b3f" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/darc-pub-dotnet-runtime-3ba4b3f4/nuget/v3/index.json" />
-    <add key="darc-pub-dotnet-emsdk-ee0a97a" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/darc-pub-dotnet-emsdk-ee0a97a0/nuget/v3/index.json" />
   </packageSources>
 </configuration>

utils/SkiaSharpGenerator/SkiaSharpGenerator.csproj

@@ -7,7 +7,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="CppAst" Version="0.5.8" />
+    <PackageReference Include="CppAst" Version="0.8.0" />
     <PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="3.6.0" />
     <PackageReference Include="Mono.Cecil" Version="0.11.2" />
     <PackageReference Include="Mono.Options" Version="5.3.0.1" />