rust-cpython: use PyList.insert() instead of .insert_item()
Silences the deprecated warning.
https://github.com/dgrunwald/rust-cpython/commit/e8cbe864841714c5555db8c90e057bd11e360c7f
[tool.black]
line-length = 80
exclude = '''
build/
| wheelhouse/
| dist/
| packages/
| \.hg/
| \.mypy_cache/
| \.venv/
| mercurial/thirdparty/
'''
skip-string-normalization = true
quiet = true