Ensure that Azure Active Directory Admin is configured for Azure MySQL Single Server

Disabled Azure Active Directory Admin for Azure MySQL Single Server may lead to unauthorized access. Without a designated Azure Active Directory Admin, the MySQL server lacks a layer of authentication and authorization. This gap may allow malicious actors to exploit potential security gaps and gain unauthorized access to sensitive data stored within the database.

In Azure Console -

1. Open the Azure Portal and go to MySQL servers.
2. Choose the SQL server you wish to edit.
3. Under Authentication, Set Azure AD Admin Name.
4. Select Save.

In Terraform -

1. In the azurerm_sql_active_directory_administrator resource, set server_name and login values.

References:
https://learn.microsoft.com/en-us/azure/mysql/flexible-server/how-to-azure-ad#configure-the-azure-ad-admin
https://registry.terraform.io/providers/hashicorp/azurerm/latest/docs/resources/mysql_server
https://registry.terraform.io/providers/hashicorp/azurerm/latest/docs/resources/mysql_active_directory_administrator