Output IPV6 Addresses

### Describe the Feature

When the subnet has been configured to create IPv6 Addresses for each network interface created within it ([input_public_assign_ipv6_address_on_creation](https://github.com/cloudposse/terraform-aws-dynamic-subnets?tab=readme-ov-file#input_public_assign_ipv6_address_on_creation)), this EC2 instance will have an IPV6 Address attached after creation.

This feature will enable the IPV6 address to be returned in the outputs, just like the IPv4 addresses.

### Expected Behavior

Instance IPV6 Address in module outputs.

### Use Case

This is majorly for the scenario where I may want an instance created with a public IPv6 address but not with an Elastic IP (due to the new pricing changes and I've hit my EIP quota). Then I can map the dns to the address with an AAAA record.

### Describe Ideal Solution

Update the module outputs to return the IPV6 address of the instance network interface

### Alternatives Considered

_No response_

### Additional Context

_No response_