Storage account has soft delete enabled for file shares

# Enable soft delete for Azure File shares on a storage account
resource "azurerm_storage_account" "<example_resource_name>" {
  name                     = "<example_resource_name>"
  resource_group_name      = "<example_resource_name>"
  location                 = "<example_resource_name>"
  account_tier             = "Standard"
  account_replication_type = "LRS"

  share_properties {
    retention_policy {
      enabled = true  # CRITICAL: enables soft delete for file shares
      days    = 7     # required retention period
    }
  }
}

// Enable soft delete for file shares on a storage account
resource sa 'Microsoft.Storage/storageAccounts@2022-09-01' existing = {
  name: '<example_resource_name>'
}

resource fileSvc 'Microsoft.Storage/storageAccounts/fileServices@2022-09-01' = {
  name: 'default'
  parent: sa
  properties: {
    shareDeleteRetentionPolicy: {
      enabled: true // CRITICAL: turns on soft delete for all file shares in this storage account
      days: 7       // required retention period
    }
  }
}