Try dnceng win pool

Author: pjcollins

build-tools/automation/azure-pipelines.yaml

@@ -25,13 +25,13 @@ variables:
   HostedPoolName: Azure Pipelines
   HostedWinImage: windows-2022
   HostedMacImage: macOS-14
+  DncEngPublicPoolName: NetCore-Public
 
 jobs:
 - job: windows_dotnet_build
   displayName: Windows - .NET
   pool:
-    name: $(HostedPoolName)
-    vmImage: $(HostedWinImage)
+    name: $(DncEngPublicPoolName)
   timeoutInMinutes: 60
   workspace:
     clean: all