Ensure that minimum TLS version is set to 1.2 for Azure MSSQL Server

Organizations should try to utilize the latest version of TLS and modern ciphers to protect data from man-in-the-middle and similar attacks.

In Azure Console -

1. Open the Azure Portal and go to SQL servers.
2. Choose the SQL server you wish to edit.
3. Under Networking.
4. Under Connectivity, Set Minimum TLS version to 1.2
5. Select Save

In Terraform -

1. In the azurerm_mssql_server resource, set minimum_tls_version to 1.2.

References:
https://learn.microsoft.com/en-us/azure/azure-sql/database/connectivity-settings?view=azuresql&tabs=azure-portal#minimal-tls-version
https://registry.terraform.io/providers/hashicorp/azurerm/latest/docs/resources/mssql_server#minimum_tls_version