Log Message:
python39 py39-html-docs: updated to 3.9.21

Python 3.9.21

Tests

gh-125041: Re-enable skipped tests for zlib on the s390x architecture: only skip \ 
checks of the compressed bytes, which can be different between zlib’s software \ 
implementation and the hardware-accelerated implementation.
gh-109396: Fix test_socket.test_hmac_sha1() in FIPS mode. Use a longer key: FIPS \ 
mode requires at least of at least 112 bits. The previous key was only 32 bits. \ 
Patch by Victor Stinner.
gh-100454: Fix SSL tests CI for OpenSSL 3.1+

Security

gh-126623: Upgrade libexpat to 2.6.4
gh-122792: Changed IPv4-mapped ipaddress.IPv6Address to consistently use the \ 
mapped IPv4 address value for deciding properties. Properties which have their \ 
behavior fixed are is_multicast, is_reserved, is_link_local, is_global, and \ 
is_unspecified.

Library

gh-124651: Properly quote template strings in venv activation scripts.
gh-103848: Add checks to ensure that [ bracketed ] hosts found by \ 
urllib.parse.urlsplit() are of IPv6 or IPvFuture format.

Documentation

gh-95588: Clarified the conflicting advice given in the ast documentation about \ 
ast.literal_eval() being “safe” for use on untrusted input while at the same \ 
time warning that it can crash the process. The latter statement is true and is \ 
deemed unfixable without a large amount of work unsuitable for a bugfix. So we \ 
keep the warning and no longer claim that literal_eval is safe.