Merge pull request #1995 from dotnet/dougbu/3.1/newer.agents.3540

[release/3.1] Update hosted and BYOC agents used in our builds

azure-pipelines.yml

@@ -55,7 +55,7 @@ stages:
             vmImage: windows-2019
           ${{ if ne(variables['System.TeamProject'], 'public') }}:
             name: NetCoreInternal-Pool
-            queue: BuildPool.Windows.10.Amd64.VS2019
+            queue: BuildPool.Server.Amd64.VS2019
         variables:
           - name: _BuildConfig
             value: Release