Defender for open-source databases is on (Standard)

resource "azurerm_security_center_subscription_pricing" "example_resource_name" {
  resource_type = "OpenSourceRelationalDatabases"
  tier          = "Standard" # Critical: enables Defender (Standard tier)
}

// Deploy at subscription scope to set Defender pricing
targetScope = 'subscription'

resource pricingOpenSource "Microsoft.Security/pricings@2023-01-01" = {
  name: 'OpenSourceRelationalDatabases'
  properties: {
    pricingTier: 'Standard' // Critical: sets the plan to Standard (ON)
  }
}