Update prValidate.yml for Azure Pipelines

Author: ramsessanchez

.azure-pipelines/prValidate.yml

@@ -67,5 +67,5 @@ steps:
     serviceEndpointName: 'microsoftgraph pipeline status'
     title: '$(Build.DefinitionName) failure notification'
     text: 'This pipeline has failed. View the build details for further information. This is a blocking failure. '
-  condition: failed()
+  condition: and(failed(), ne(variables['Build.Reason'], 'Manual'))
   enabled: true