feat: add support for availability_zone_rebalancing in aws_ecs_service resource @dmitrijn (#256)
## what * Add `availability_zone_rebalancing` attribute for [aws_ecs_service](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/ecs_service#availability_zone_rebalancing-1) * Update minimum AWS provider version to v5.77.why
- Useful for ecs service rebalancing
references
https://docs.aws.amazon.com/AmazonECS/latest/developerguide/service-rebalancing.html
https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-ecs-service.html#cfn-ecs-service-availabilityzonerebalancing
https://github.com/hashicorp/terraform-provider-aws/releases/tag/v5.77.0
Contributors
dmitrijn