chore(deps): update module github.com/hugomods/simple-icons to v13.21.0+incompatible#397

mergify[bot] merged 1 commit intomainhbstack/footer:mainfrom

renovate/github.com-hugomods-simple-icons-13.xhbstack/footer:renovate/github.com-hugomods-simple-icons-13.xCopy head branch name to clipboard