Update NuGet.config for 9

Author: roji

NuGet.config

@@ -1,11 +1,9 @@
 <?xml version="1.0" encoding="utf-8"?>
 <configuration>
     <packageSources>
-<!--
-        <add key="dotnet8" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet8/nuget/v3/index.json" />
+        <add key="dotnet9" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet9/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="npgsql-vnext" value="https://www.myget.org/F/npgsql-vnext/api/v3/index.json" />
--->
         <add key="nuget.org" value="https://api.nuget.org/v3/index.json" />
     </packageSources>
 
@@ -20,11 +18,9 @@
             <package pattern="Npgsql" />
             <package pattern="Npgsql.*" />
         </packageSource>
-<!--
-        <packageSource key="dotnet8">
+        <packageSource key="dotnet9">
             <package pattern="*" />
         </packageSource>
--->
     </packageSourceMapping>
 
 </configuration>