use ltsc2019/vse2022:vnext image

Author: kmahone

build/WinUI-OB-Official.yml

@@ -23,7 +23,7 @@ variables:
   NUGET_XMLDOC_MODE: none
 
   # Docker image which is used to build the project https://aka.ms/obpipelines/containers
-  WindowsContainerImage: 'onebranch.azurecr.io/windows/ltsc2019/vse2022:latest' 
+  WindowsContainerImage: 'onebranch.azurecr.io/windows/ltsc2019/vse2022:vnext ' 
 
   Codeql.Enabled: true #  CodeQL once every 3 days on the default branch for all languages its applicable to in that pipeline.