feat!: Allow multiple traffic source attachments

[Yethal]

Description

• target_group_arns and load_balancers are no longer supported on the ASG; instead users should use the traffic_source_attachments which cover this functionality and more
• Users can now create multiple traffic_source_attachments instead of previously where the module only supported one attachment
• The minimum supported version of Terraform has been raised to v1.3

Motivation and Context

• Support multiple traffic source attachments to the same ASG
• Resolves create_traffic_source_attachment does not work as expected #278

Breaking Changes

• Yes

How Has This Been Tested?

• I have updated at least one of the examples/* to demonstrate and validate my change(s)
• I have tested and validated these changes using one or more of the provided examples/* projects
• I have executed pre-commit run -a on my pull request

[Yethal]

@antonbabenko Can we merge this?

[github-actions]

This PR has been automatically marked as stale because it has been open 30 days
with no activity. Remove stale label or comment or this PR will be closed in 10 days

[Yethal]

@antonbabenko Can we merge this?

[antonbabenko]

This PR is included in version 8.0.0 🎉

[github-actions]

I'm going to lock this pull request because it has been closed for 30 days ⏳. This helps our maintainers find and focus on the active issues. If you have found a problem that seems related to this change, please open a new issue and complete the issue template so we can capture all the details necessary to investigate further.