James Clark

Deprecation warning when using `pip_api` on Python 3.11

1

**Reproduction** ``` python3.11 -Wall -c "import pip_api" /lib/python3.11/site-packages/pip_api/_vendor/pyparsing.py:108: DeprecationWarning: module 'sre_constants' is deprecated import sre_constants ``` **Root cause** `sre_constants` is imported by the vendored `pyparsing` module: https://github.com/di/pip-api/blob/5ac3ec840dd4eb0fd20ea69d5d2362472e0d4daf/pip_api/_vendor/pyparsing.py#L108 see: https://github.com/python/cpython/issues/91308

## Description Include description of feature this PR introduces or a bug that it fixes. Include the following information: - Context: why is it needed? In case of bug, what...