Red Hat Security Advisory: go-toolset-1.15-golang security update

CVE-2021-29923 — golang: net: incorrect parsing of extraneous zero characters at the beginning of an IP address octet CVE-2021-33195 — golang: net: lookup functions may return invalid host names CVE-2021-33197 — golang: net/http/httputil: ReverseProxy forwards connection headers if first one is empty