Log Message:
py-w3lib: updated to 2.3.1

2.3.1 (2025-01-27)

- Fix a merge error, no code changes.

2.3.0 (2025-01-27)

- Dropped Python 3.8 support
- Removed the following functions, deprecated in 2.0.0:

    - ``w3lib.util.str_to_unicode``
    - ``w3lib.util.to_native_str``
    - ``w3lib.util.unicode_to_str``

- Added Python 3.13 support
- Fixed running tests with newer point releases of Python 3.10 and 3.11
- Cleanup and CI improvements