Adds required runtime for code sign tool (#105)

* update to try out windows-2022 as ubuntu failed at code signing which may require windows after all
* add runtime 2.1 for code sign

Author: awentzel

.azure-devops/cd-publish.yml

@@ -15,6 +15,11 @@ steps:
 - task: NuGetToolInstaller@1
   displayName: Install NuGet tools
 
+- task: UseDotNet@2
+  displayName: 'Install .NET 2.1 for ESRP Code Sign tool'  
+  inputs:    
+    version: 2.1.x
+
 - task: UseDotNet@2
   displayName: 'Install .net core 6.0 (preview)'
   inputs: