Retain "master" tag for aws-es-proxy image#16

Copilot wants to merge 1 commit intofeat/aws-es-proxy-master-tagSu-informatics-lab/gen3-gitops:feat/aws-es-proxy-master-tagfrom

copilot/sub-pr-14-againSu-informatics-lab/gen3-gitops:copilot/sub-pr-14-againCopy head branch name to clipboard