added use dotnet task

windows-x64-release.yml

@@ -18,6 +18,10 @@ variables:
   buildConfiguration: 'Release'
 
 steps:
+- task: UseDotNet@2
+  inputs:
+    packageType: 'sdk'
+    version: '6'
 - task: NuGetToolInstaller@1
 
 - task: NuGetCommand@2

windows-x86-release.yml

@@ -17,6 +17,12 @@ variables:
   buildConfiguration: 'Release'
 
 steps:
+
+- task: UseDotNet@2
+  inputs:
+    packageType: 'sdk'
+    version: '6'
+
 - task: NuGetToolInstaller@1
 
 - task: NuGetCommand@2