Update polars requirement from 0.39.0 to 0.40.0

[dependabot]

Updates the requirements on polars to permit the latest version.

Release notes

Sourced from polars's releases.

Rust Polars 0.40.0

💥 Breaking changes

• Remove incremental read based batched CSV reader (#16259)
• separate rolling_*_by from rolling_*(..., by=...) in Rust (#16102)
• Move CSV read options from CsvReader to CsvReadOptions (#16126)
• Rename all 'Chunk's to RecordBatch (#16063)
• prepare for join coalescing argument (#15418)
• Rename to CsvParserOptions to CsvReaderOptions, use in CsvReader (#15919)
• Add context trace to LazyFrame conversion errors (#15761)
• Move schema resolving of file scan to IR phase (#15739)
• Move schema resolving to IR phase. (#15714)
• Rename LogicalPlan and builders to reflect their uses better (#15712)

🚀 Performance improvements

• Use branchless uleb128 decoding for parquet (#16352)
• Reduce error bubbling in parquet hybrid_rle (#16348)
• use is_sorted in ewm_mean_by, deprecate check_sorted (#16335)
• Optimize is_sorted for numeric data (#16333)
• do not use pyo3-built (#16309)
• Faster bitpacking for Parquet writer (#16278)
• Avoid importing ctypes.util in CPU check script if possible (#16307)
• Don't rechunk when converting DataFrame to numpy/ndarray (#16288)
• use zeroed vec in ewm_mean_by for sorted fastpath (#16265)
• use zeroable_vec in ewm_mean_by (#16166)
• Improve cost of chunk_idx compute (#16154)
• Don't rechunk by default in concat (#16128)
• Ensure rechunk is parallel (#16127)
• Don't traverse deep datasets that we repr as union in CSE (#16096)
• Ensure better chunk sizes (#16071)
• Don't rechunk in parallel collection (#15907)
• Improve non-trivial list aggregations (#15888)
• Ensure we hit specialized gather for binary/strings (#15886)
• Limit the cache size for to_datetime (#15826)
• skip initial null items and don't recompute slope in interpolate (#15819)
• Fix quadratic in binview growable same source (#15734)

✨ Enhancements

• Raise when joining on the same keys twice (#16329)
• Don't require data to be sorted by by column in rolling_*_by operations (#16249)
• Add struct.field expansion (regex, wildcard, columns) (#16320)
• Faster bitpacking for Parquet writer (#16278)
• Add struct.with_fields (#16305)
• Handle implicit SQL string → temporal conversion in the BETWEEN clause (#16279)
• Add new index/range based selector cs.by_index, allow multiple indices for nth (#16217)
• Show warning if expressions are very deep (#16233)
• Native CSV file list reading (#16180)
• Register memory mapped files and raise when written to (#16208)

... (truncated)

Commits

• 7bc7014 rust Polars 0.40.0 (#16377)
• c334c70 fix(python): Use strings to expose ClosedInterval in expr IR (#16369)
• 233386b fix(rust): cargo clippy for uleb128 safety comment (#16368)
• 63f0fcd build(python): Fix allocator features (#16365)
• 30ba423 python Polars 0.20.27 (#16363)
• 6289dc3 feat(python): expose BooleanFunction in expr IR (#16355)
• 7b155c4 fix(python): pick a consistent order for the sort options in PyIR (#16350)
• 5e6a433 refactor(python): Move DataFrame.to_numpy implementation to Rust side (#16354)
• e60ea16 fix: Infer CSV schema as supertype of all files (#16349)
• 2d03c39 perf: Use branchless uleb128 decoding for parquet (#16352)
• Additional commits viewable in compare view

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