chore: Add validateTests parameter to Azure Dev workflow

Author: Prajwal-Microsoft

.github/workflows/azure-dev.yml

@@ -23,6 +23,7 @@ jobs:
         id: validation 
         with: 
             useDevContainer: false
+            validateTests: ''
         env: 
           AZURE_CLIENT_ID: ${{ secrets.AZURE_CLIENT_ID }} 
           AZURE_CLIENT_SECRET: ${{ secrets.AZURE_CLIENT_SECRET }}