Fix APIScan authentication (#10504)

azure-pipelines-compliance.yml

@@ -66,7 +66,7 @@ steps:
     softwareBuildNum: '$(Build.BuildId)'
     symbolsFolder: 'SRV*http://symweb'
   env:
-    AzureServicesAuthConnectionString: runAs=App;AppId=$(ApiScanClientId);TenantId=$(ApiScanTenant);AppKey=$(ApiScanSecret)
+    AzureServicesAuthConnectionString: runAs=App;AppId=$(MicroBuildApiScanClientId)
   continueOnError: true
 
 - task: TSAUpload@2