Add security group ARN attribute to the module output

[harloprillar]

ARN attribute of the security group created by this module not available, whereas it exists in official AWS provider
https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/security_group#arn

[dhoppe]

The additional output arn is available since version 3.29.0 of the Terraform AWS provider.
hashicorp/terraform-provider-aws#13944 (comment)

This means the version constraint needs to be modified and since this is an backwards incompatible change, a new release is necessary.

All the examples need to be modified as well.
#230

[antonbabenko]

This issue has been resolved in version 4.10.0 🎉

[github-actions]

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