chore(deps): update docker/setup-buildx-action action to v4#48

renovate[bot] wants to merge 5 commits intomainsomehowchris/rocket-validation:mainfrom

renovate/docker-setup-buildx-action-4.xsomehowchris/rocket-validation:renovate/docker-setup-buildx-action-4.xCopy head branch name to clipboard