build(deps): update polars requirement from 0.37.0 to 0.38.2

[dependabot[bot]]

Updates the requirements on polars to permit the latest version.

Release notes

Sourced from polars's releases.

Rust Polars 0.38.2

🏆 Highlights

• Streaming outer joins (#14828)

🚀 Performance improvements

• Ensure parallel encoding/compression in sink_parquet (#14964)
• hoist errors out of iterators in parquet (#14945)
• add basic AVX-512 filters (#14892)
• improve join-asof materialization (#14884)
• Optimize chunked-id gather for binaryviews (#14878)
• rework scalar filter kernels (#14865)
• Reduce size of optional join-indexes (#14856)
• Streaming outer joins (#14828)
• Set sorted flag for cum_count on columns (#14849)

✨ Enhancements

• Support writing Array type in parquet (#14943)
• Sort decimal fields (#14649)
• Import NamedFrom in df! macro (#14860)
• try-improve concurrency tuner (#14827)
• Streaming outer joins (#14828)
• Set sorted flag for cum_count on columns (#14849)
• Ensure binview types are rle-encoded in parquet write (#14818)
• Implement strict/nonstrict conversion for primitive AnyValues (#14186)
• Disable timeouts (#14809)
• cleanup spill disks in process (#14807)

🐞 Bug fixes

• Fix invalid partitionable query (#14966)
• allow nonstrict cast of categorical/enum to enum (#14910)
• count_rows multi-threaded under-counting in parser.rs (#14963)
• raise proper error instead of panicking when result of truncation is non-existent datetime (#14958)
• ooc-sort issues (#14959)
• Do not raise when constructing from a list of Series with Nones (#14942)
• Don't access out-of-bounds for null indices in bitmap gather (#14932)
• std when ddof>=n_values returns None even in rolling context (#11750)
• Don't rechunk categoricals when moving to physical (#14934)
• parquet rle boolean decoder (#14931)
• boolean filter gave overly large buffers to Bitmap::from_u8_vec (#14924)
• Fix sliced dictionary state in parquet (#14917)
• Fix possibly incorrect order of columns when using ipc stream with_columns (#14859)
• Fully qualify polars_bail! in polars_ensure! (#14901)
• Fix DataFrame.min/max for decimals (#14890)
• Assert chunks are equal after physical cast to prevent OOB (#14873)
• not all cpu feature flag tests were mocked (#14864)

... (truncated)

Commits

• 946fad7 rust polars 0.38.2 (#14969)
• 4bc67a0 python polars 0.20.15 (#14967)
• e7be629 fix: Fix invalid paritionable query (#14966)
• 419b891 fix(rust, python): allow nonstrict cast of categorical/enum to enum (#14910)
• 8a61d29 perf: Ensure parallel encoding/compression in sink_parquet (#14964)
• be08160 fix: count_rows multi-threaded under-counting in parser.rs (#14963)
• 06116df fix: raise proper error instead of panicking when result of truncation is non...
• f29e3a6 fix: ooc-sort issues (#14959)
• 8599b81 perf: hoist errors out of iterators in parquet (#14945)
• 02040aa feat: Support writing Array type in parquet (#14943)
• Additional commits viewable in compare view

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[dependabot[bot]]

Looks like polars is up-to-date now, so this is no longer needed.