Bump polars from 0.17.7 to 0.20.9

[dependabot]

Bumps polars from 0.17.7 to 0.20.9.

Release notes

Sourced from polars's releases.

Python Polars 0.20.9

🚀 Performance improvements

• use owned arithmetic in horizontal_sum (#14525)

✨ Enhancements

• Add writable flag to DataFrame.to_numpy (#14520)
• flatten aliases (#14512)
• Make formatting more consistent in DOT graphs (#14486)
• add flush operator to streaming operators (#14500)

🐞 Bug fixes

• ensure the streaming dispatcher can replace placeholders in unions (#14537)
• Ensure series are contiguous prior to transpose (#14527)
• write csv header if necessary when finishing sinks (#14518)
• fix logical dtypes in take_chunked (#14517)
• fix binary-offset row-encode (#14514)
• race conditions in OOC writing (#14510)
• Remove is_numeric check on Series.std/var (#14493)
• Error on invalid schema input in DataFrame constructor (#14483)

📖 Documentation

• Fix docstring example for Config.save_to_file (#14533)
• Fix infer_schema_length param description (#14233)
• Clean up grammar and capitalization in README.md (#14488)
• Add examples for Series.bin.ends_with, Series.bin.starts_with, Series.bin.decode, Series.bin.encode. (#14478)

🛠️ Other improvements

• add code coverage CI (#14532)
• Re-enable streaming OOC tests (#14522)
• Use constant for checking Sphinx building (#14502)

Thank you to all our contributors for making this release possible! @​FBruzzesi, @​NedJWestern, @​c-peters, @​dannyfriar, @​i-aki-y, @​jdanford, @​mbuhidar, @​mcrumiller, @​ritchie46, @​stinodego and @​taki-mekhalfa

Python Polars 0.20.8

🏆 Highlights

• Implemented tree formatting for LogicalPlan (#14221)

⚠️ Deprecations

• Deprecate positional args in pivot to prepare new functionality (#14428)

🚀 Performance improvements

... (truncated)

Commits

• 8952afc python polars 0.20.9 (#14543)
• 7dae517 feat: add code coverage CI (#14532)
• a120851 fix: ensure the streaming dispatcher can replace placeholders in unions (#14537)
• 2fc76c7 docs(python): Fix docstring example for Config.save_to_file (#14533)
• a4921bb docs(python): Fix infer_schema_length param description (#14233)
• e8d807b feat(python): Add writable flag to DataFrame.to_numpy (#14520)
• a405016 fix: Ensure series are contiguous prior to transpose (#14527)
• 0a7cf90 perf: use owned arithmetic in horizontal_sum (#14525)
• 4432483 fix: write csv header if necessary when finishing sinks (#14518)
• c7e6bb4 test(python): Re-enable streaming OOC tests (#14522)
• Additional commits viewable in compare view

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[dependabot]

Superseded by #359.