Red Hat Security Advisory: python39:3.9 and python39-devel:3.9 security update

CVE-2021-3426 — python: Information disclosure via pydoc CVE-2021-3572 — python-pip: Incorrect handling of unicode separators in git references CVE-2021-3733 — python: urllib: Regular expression DoS in AbstractBasicAuthHandler CVE-2021-3737 — python: urllib: HTTP client possible infinite loop on a 100 Continue response CVE-2021-28957 — python-lxml: Missing input sanitization for formaction HTML5 attributes may lead to XSS CVE-2021-29921 — python-ipaddress: Improper input validation of octal strings CVE-2021-33503 — python-urllib3: ReDoS in the parsing of authority part of URL