Update pip to 23.3.2

[pyup-bot]

This PR updates pip from 23.3.1 to 23.3.2.

Changelog

23.3.2

===================

Bug Fixes
---------

- Fix a bug in extras handling for link requirements (`12372 <https://github.com/pypa/pip/issues/12372>`_)
- Fix mercurial revision "parse error": use ``--rev={ref}`` instead of ``-r={ref}`` (`12373 <https://github.com/pypa/pip/issues/12373>`_)

Links

• PyPI: https://pypi.org/project/pip
• Changelog: https://data.safetycli.com/changelogs/pip/
• Homepage: https://pip.pypa.io/

[pyup-bot]

Closing this in favor of #475