feat!: Upgrade AWS provider and min required Terraform version to `6.0` and `1.5.7` respectively #283

Job	Run time
Collect workflow inputs	6s
Max TF pre-commit	1m 3s
Min TF pre-commit (.)	13s
Min TF pre-commit (./modules/cluster)	26s
Min TF pre-commit (./examples/complete)	16s
Min TF pre-commit (./modules/service)	24s
Min TF pre-commit (./modules/container-definition)	24s
Min TF pre-commit (./examples/fargate)	28s
Min TF pre-commit (./examples/ec2-autoscaling)	27s
	3m 47s

Provide feedback