This package uses the deprecated EGO_SUM go-module.eclass variable. It must be migrated to dep tarballs (see eclassdocs) or vendored deps if upstream provide them. $ pkgcheck scan -k DeprecatedEclassVariable dev-util/drone-cli dev-util/drone-cli DeprecatedEclassVariable: version 1.2.1: uses deprecated variable on line 10: EGO_SUM (no replacement)
William asked that I comment on all of these bugs to note you don't need to revbump to fix it as it'll be successfully installed already.
This has been fixed in the tree for some time. William