Add support for image_tag_mutability_exclusion_filter in ECR repositories#153

Benbentwo merged 15 commits intomaincloudposse/terraform-aws-ecr:mainfrom

copilot/fix-7d6b6c27-e54c-419f-bb97-e9127134b18fcloudposse/terraform-aws-ecr:copilot/fix-7d6b6c27-e54c-419f-bb97-e9127134b18fCopy head branch name to clipboard