support setting of runtime_family on ecs_task_definition

[JoshiiSinfield]

Is your request related to a new offering from AWS?

Is this functionality available in the AWS provider for Terraform? See CHANGELOG.md, too.

• No 🛑: please wait to file a request until the functionality is avaialble in the AWS provider
• Yes ✅: please list the AWS provider version which introduced this functionality
  released in v3.69 of AWS Provider:
  r/ecs - Add support for FARGATE Windows Containers and ARM based Containers hashicorp/terraform-provider-aws#22016

Support for ARM in Atlantis added in v0.19.0: https://github.com/runatlantis/atlantis/releases/tag/v0.19.0

Is your request related to a problem? Please describe.

Describe the solution you'd like.

I'd like to run Atlantis on ARM64 to reduce costs and get increased performance on Fargate.

Describe alternatives you've considered.

Additional context

[github-actions]

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

[antonbabenko]

This issue has been resolved in version 3.16.0 🎉

[github-actions]

I'm going to lock this issue 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 similar to this, please open a new issue and complete the issue template so we can capture all the details necessary to investigate further.