- Update to 2.2.3:
  * Features
    + Added support for Python 3.13.
  * Bugfixes
    + Fixed the default encoding of chunked request bodies to be UTF-8
      instead of ISO-8859-1. All other methods of supplying a request body
      already use UTF-8 starting in urllib3 v2.0.
    + Fixed ResourceWarning on CONNECT with Python < 3.11.4 by backporting
      python/cpython#103472.
    + Fixed a crash where certain standard library hash functions were absent
      in restricted environments.
    + Added the Proxy-Authorization header to the list of headers to strip
      from requests when redirecting to a different host. As before,
      different headers can be set via Retry.remove_headers_on_redirect.
    + Allowed passing negative integers as amt to read methods of
      http.client.HTTPResponse as an alternative to None.
    + Fixed issue where InsecureRequestWarning was emitted for HTTPS
      connections when using Emscripten.
    + Fixed HTTPConnectionPool.urlopen to stop automatically casting
      non-proxy headers to HTTPHeaderDict. This change was premature as it
      did not apply to proxy headers and HTTPHeaderDict does not handle byte
      header values correctly yet.
    + Changed InvalidChunkLength to ProtocolError when response terminates
      before the chunk length is sent.
    + Changed ProtocolError to be more verbose on incomplete reads with
      excess content.
    + Added support for HTTPResponse.read1() method.
    + Fixed issue where requests against urls with trailing dots were
      failing due to SSL errors when using proxy.
    + Fixed HTTPConnection.proxy_is_verified and

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