build(deps): bump golang from 1.16.9 to 1.18.4#15

dependabot[bot] wants to merge 1 commit intomaink8s-infra-cherrypick-robot/cluster-api-provider-aws:mainfrom

dependabot/docker/golang-1.18.4k8s-infra-cherrypick-robot/cluster-api-provider-aws:dependabot/docker/golang-1.18.4Copy head branch name to clipboard