Update pyo3 requirement from 0.19 to 0.20

[dependabot]

Updates the requirements on pyo3 to permit the latest version.

Release notes

Sourced from pyo3's releases.

PyO3 0.20.2

This release corrects a failure to compile of the either feature when the experimental-inspect feature is not enabled.

It also adds backwards-compatibility for pyo3 0.20.0 to build against pyo3-build-config 0.20.2, as pyo3 0.20.0 was (unintentionally) not pinned against an exact patch version pyo3-build-config, and pyo3 0.20.0 could not build against pyo3-build-config 0.20.1 due to an internal API adjustment.

Thank you to the following users for the improvements:

@​adamreichold @​davidhewitt

Changelog

Sourced from pyo3's changelog.

[0.20.2] - 2024-01-04

Packaging

• Pin pyo3 and pyo3-ffi dependencies on pyo3-build-config to require the same patch version, i.e. pyo3 0.20.2 requires exactly pyo3-build-config 0.20.2. #3721

Fixed

• Fix compile failure when building pyo3 0.20.0 with latest pyo3-build-config 0.20.X. #3724
• Fix docs.rs build. #3722

[0.20.1] - 2023-12-30

Added

• Add optional either feature to add conversions for either::Either<L, R> sum type. #3456
• Add optional smallvec feature to add conversions for smallvec::SmallVec. #3507
• Add take and into_inner methods to GILOnceCell #3556
• #[classmethod] methods can now also receive Py<PyType> as their first argument. #3587
• #[pyfunction(pass_module)] can now also receive Py<PyModule> as their first argument. #3587
• Add traverse method to GILProtected. #3616
• Added abi3-py312 feature #3687

Fixed

• Fix minimum version specification for optional chrono dependency. #3512
• Silenced new clippy::unnecessary_fallible_conversions warning when using a Py<Self> self receiver. #3564

[0.20.0] - 2023-10-11

Packaging

• Dual-license PyO3 under either the Apache 2.0 OR the MIT license. This makes the project GPLv2 compatible. #3108
• Update MSRV to Rust 1.56. #3208
• Bump indoc dependency to 2.0 and unindent dependency to 0.2. #3237
• Bump syn dependency to 2.0. #3239
• Drop support for debug builds of Python 3.7. #3387
• Bump chrono optional dependency to require 0.4.25 or newer. #3427
• Support Python 3.12. #3488

Added

• Support __lt__, __le__, __eq__, __ne__, __gt__ and __ge__ in #[pymethods]. #3203
• Add FFI definition Py_GETENV. #3336
• Add as_ptr and into_ptr inherent methods for Py, PyAny, PyRef, and PyRefMut. #3359
• Implement DoubleEndedIterator for PyTupleIterator and PyListIterator. #3366
• Add #[pyclass(rename_all = "...")] option: this allows renaming all getters and setters of a struct, or all variants of an enum. Available renaming rules are: "camelCase", "kebab-case", "lowercase", "PascalCase", "SCREAMING-KEBAB-CASE", "SCREAMING_SNAKE_CASE", "snake_case", "UPPERCASE". #3384
• Add FFI definitions PyObject_GC_IsTracked and PyObject_GC_IsFinalized on Python 3.9 and up (PyPy 3.10 and up). #3403
• Add types for None, Ellipsis, and NotImplemented. #3408

... (truncated)

Commits

• bcef18b release: 0.20.2
• fa6d60b Use a definite version specification when depending on pyo3-build-config.
• f9f0bdd Merge pull request #3724 from davidhewitt/fix-build-config-issue
• cf21325 re-add emit_pyo3_cfgs for pyo3 0.20.0 compatibility
• f789385 Merge pull request #3722 from PyO3/fix-doc-build
• 9120b35 Include the experimental-inspect feature for the docs.rs build thereby making...
• 2e79c55 Add CI job to test the equivalent of a docs.rs build.
• 2564ca4 Fix missing feature flags in implementation of Either conversion.
• be4d562 Merge pull request #3713 from PyO3/release-0.20.1
• d3f034a release: 0.20.1
• Additional commits viewable in compare view

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[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (ca2e860) 91.52% compared to head (55e67ba) 91.51%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #459      +/-   ##
==========================================
- Coverage   91.52%   91.51%   -0.01%     
==========================================
  Files         162      162              
  Lines       21738    21741       +3     
==========================================
+ Hits        19896    19897       +1     
- Misses       1842     1844       +2     

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