Update azure-pipelines.yml for Azure Pipelines

Author: tom-englert

azure-pipelines.yml

@@ -89,7 +89,7 @@ stages:
         --descriptionUrl "https://github.com/dotnet/DataGridExtensions"
         --azure-key-vault-tenant-id "$(SignTenantId)" `
         --azure-key-vault-client-id "$(SignClientId)" `
-        --azure-key-vault-client-secret '$(SignClientSecret)' `
+        --azure-key-vault-client-secret '$(SignClientSecret2)' `
         --azure-key-vault-certificate "$(SignKeyVaultCertificate)" `
         --azure-key-vault-url "$(SignKeyVaultUrl)"
       displayName: Sign packages