Merge pull request #32589 from dotnet/dougbu/v5.0.6.II

- merge release commit
- update SDK and runtimes
- update package baselines
- update 3.1.x site extension version
- re-enable baseline validation

Author: dougbu

NuGet.config

@@ -4,10 +4,12 @@
     <clear />
     <!--Begin: Package sources managed by Dependency Flow automation. Do not edit the sources below.-->
     <!--  Begin: Package sources from dotnet-efcore -->
-    <add key="darc-pub-dotnet-efcore-5420351" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/darc-pub-dotnet-efcore-54203510/nuget/v3/index.json" />
+    <add key="darc-int-dotnet-efcore-42e8143" value="https://pkgs.dev.azure.com/dnceng/_packaging/darc-int-dotnet-efcore-42e81439/nuget/v3/index.json" />
     <!--  End: Package sources from dotnet-efcore -->
     <!--  Begin: Package sources from dotnet-runtime -->
-    <add key="darc-int-dotnet-runtime-2f740ad" value="https://pkgs.dev.azure.com/dnceng/_packaging/darc-int-dotnet-runtime-2f740adc/nuget/v3/index.json" />
+    <add key="darc-int-dotnet-runtime-478b2f8-2" value="https://pkgs.dev.azure.com/dnceng/_packaging/darc-int-dotnet-runtime-478b2f8c-2/nuget/v3/index.json" />
+    <add key="darc-int-dotnet-runtime-478b2f8-1" value="https://pkgs.dev.azure.com/dnceng/_packaging/darc-int-dotnet-runtime-478b2f8c-1/nuget/v3/index.json" />
+    <add key="darc-int-dotnet-runtime-478b2f8" value="https://pkgs.dev.azure.com/dnceng/_packaging/darc-int-dotnet-runtime-478b2f8c/nuget/v3/index.json" />
     <!--  End: Package sources from dotnet-runtime -->
     <!--End: Package sources managed by Dependency Flow automation. Do not edit the sources above.-->
     <add key="dotnet-eng" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-eng/nuget/v3/index.json" />
@@ -22,9 +24,12 @@
     <clear />
     <!--Begin: Package sources managed by Dependency Flow automation. Do not edit the sources below.-->
     <!--  Begin: Package sources from dotnet-runtime -->
-    <add key="darc-int-dotnet-runtime-2f740ad" value="true" />
+    <add key="darc-int-dotnet-runtime-478b2f8" value="true" />
+    <add key="darc-int-dotnet-runtime-478b2f8-1" value="true" />
+    <add key="darc-int-dotnet-runtime-478b2f8-2" value="true" />
     <!--  End: Package sources from dotnet-runtime -->
     <!--  Begin: Package sources from dotnet-efcore -->
+    <add key="darc-int-dotnet-efcore-42e8143" value="true" />
     <!--  End: Package sources from dotnet-efcore -->
     <!--End: Package sources managed by Dependency Flow automation. Do not edit the sources above.-->
   </disabledPackageSources>