fix: revert ES_VERSION to v7 for v1.28.x compatibility#317

rkannan82 merged 1 commit intorelease/v1.28.xtemporalio/docker-builds:release/v1.28.xfrom

fix/es-version-v7-v1.28.xtemporalio/docker-builds:fix/es-version-v7-v1.28.xCopy head branch name to clipboard