[Terraform] Update sql template

[cmaneu]

│ Warning: Deprecated Resource
│
│   with module.database.azurerm_sql_firewall_rule.database,
│   on modules/sql-server/main.tf line 60, in resource "azurerm_sql_firewall_rule" "database":
│   60: resource "azurerm_sql_firewall_rule" "database" {
│
│ The `azurerm_sql_firewall_rule` resource is deprecated and will be removed in version 4.0 of the AzureRM
│ provider. Please use the `azurerm_mssql_firewall_rule` resource instead.
╵