switch build all tasks step to 1es pool (#18706)

* switch build all tasks step to 1es pool

* [CI/CD] Add task validation step

- Add .Net6 for signing

---------

Co-authored-by: Kirill Ivlev <[email protected]>

Author: DmitriiBobreshev

azure-pipelines.yml

@@ -97,7 +97,7 @@ jobs:
     condition: succeeded()
     timeoutInMinutes: 180
     pool:
-      vmImage: windows-2022
+      name: 1ES-Shared-Hosted-Pool_Windows-Server-2022
     steps:
     - template: ci/build-all-tasks.yml
 

ci/sign-all-tasks.yml

@@ -3,6 +3,11 @@ parameters:
   type: string
 
 steps:
+# Use .NET SDK 6
+- task: UseDotNet@2
+  displayName: 'Install .NET Core SDK 6.x'
+  inputs:
+    version: 6.x
 
 - task: SFP.build-tasks.custom-build-task-1.EsrpCodeSigning@2
   inputs: