Ensure AWS ACM only has certificates with single domain names, and none with wildcard domain names

AWS ACM Certificates with wildcard domains are harder to manage.

Wildcard domain names (domain names containing wildcards like *) are prohibited.

In AWS Console -

1. Log into the AWS Console and go to the ACM Console.
2. Here you have the ability to request new certificates, but you cannot edit the domain name field on existing ones. To create a new one, select Request Certificate.

In Terraform -

1. In the aws_acm_certificate resource, set the attribute 'domain_name' to a valid domain name rather than an asterisk(*).

References:
https://docs.aws.amazon.com/acm/latest/userguide/gs.html
https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/acm_certificate#domain_name