try using token

Author: SteveL-MSFT

.pipelines/DSC-Official.yml

@@ -271,6 +271,9 @@ extends:
               Write-Host "##vso[task.setsecret]$accessToken"
               $header = "Bearer $accessToken"
               Write-Host "##vso[task.setvariable variable=CARGO_REGISTRIES_POWERSHELL_TOKEN]$header"
+              $token = ConvertTo-SecureString $accessToken -AsPlainText -Force
+              $out = invoke-webrequest -uri "https://pkgs.dev.azure.com/powershell/PowerShell/_apis/packaging/feeds/powershell/cargo/packages/atty/versions/0.2.0?api-version=7.2-preview.1" -Token $token -Authentication Bearer -SkipHttpErrorCheck
+              Write-Host ($out | Out-String)
           displayName: 'Get Azure DevOps Token'
           env:
             ob_restore_phase: true