- Update to 3.9.12:
  - bpo-46968: Check for the existence of the “sys/auxv.h” header
    in faulthandler to avoid compilation problems in systems
    where this header doesn’t exist. Patch by Pablo Galindo
  - bpo-47101: hashlib.algorithms_available now lists only
    algorithms that are provided by activated crypto providers on
    OpenSSL 3.0. Legacy algorithms are not listed unless the
    legacy provider has been loaded into the default OSSL
    context.
  - bpo-23691: Protect the re.finditer() iterator from
    re-entering.
  - bpo-42369: Fix thread safety of zipfile._SharedFile.tell() to
    avoid a “zipfile.BadZipFile: Bad CRC-32 for file” exception
    when reading a ZipFile from multiple threads.
  - bpo-38256: Fix binascii.crc32() when it is compiled to use
    zlib’c crc32 to work properly on inputs 4+GiB in length
    instead of returning the wrong result. The workaround prior
    to this was to always feed the function data in increments
    smaller than 4GiB or to just call the zlib module function.
  - bpo-39394: A warning about inline flags not at the start of
    the regular expression now contains the position of the flag.
  - bpo-47061: Deprecate the various modules listed by PEP 594:
  - aifc, asynchat, asyncore, audioop, cgi, cgitb, chunk, crypt,
    imghdr, msilib, nntplib, nis, ossaudiodev, pipes, smtpd,
    sndhdr, spwd, sunau, telnetlib, uu, xdrlib
  - bpo-2604: Fix bug where doctests using globals would fail
    when run multiple times.
  - bpo-45997: Fix asyncio.Semaphore re-aquiring FIFO order.
  - bpo-47022: The asynchat, asyncore and smtpd modules have been
    deprecated since at least Python 3.6. Their documentation has

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