chore: bump polars from 1.38.0 to 1.39.2

[dependabot]

Bumps polars from 1.38.0 to 1.39.2.

Release notes

Sourced from polars's releases.

Python Polars 1.39.2

• No changes

Thank you to all our contributors for making this release possible! @​nameexhaustion and @​ritchie46

Python Polars 1.39.1

🐞 Bug fixes

• Handle empty rolling windows in streaming engine (#26903)

📖 Documentation

• Add documentation for on_columns for LazyFrame pivot (#26859)

🛠️ Other improvements

• Bump build deps used in ARM64 Windows release pipeline (#26892)

Thank you to all our contributors for making this release possible! @​Kevin-Patyk, @​RenzoMXD, @​TNieuwdorp, @​dsprenkels, @​gautamvarmadatla, @​nameexhaustion, @​nicholaslegrand102 and @​ritchie46

Python Polars 1.39.0

🚀 Performance improvements

• Lower arg_{min,max} to streaming engine (#26845)
• Additional IR slice pushdown after filter pushdown (#26815)
• Streaming first/last on Enum through physical (#26783)
• Fast filter for scalar predicates (#26745)
• Allow SimpleProjection in streaming engine to rename (#26709)
• Streaming cloud download for scan_csv (#26637)
• Drop columns only needed for predicates after the predicate is applied (#26703)
• Run projection pushdown after predicate pushdown (#26688)
• Comparison literal downcasting (#26663)
• Add dynamic predicates for TopK (#26495)
• Increase minimum default parquet row group prefetch to 8 (#26632)
• Partial predicate conversion to PyArrow (#26567)
• Streaming cloud download for scan_ndjson / scan_lines (#26563)
• Grab GIL fewer times during Object join materialization (#26587)
• Improve CSV and NDJSON cloud sink performance (#26545)
• Tune cloud writer performance (#26518)
• Allow parallel InMemorySinks in streaming engine (#26501)
• Add streaming AsOf join node (#26398)
• Don't always rechunk on gather of nested types (#26478)

✨ Enhancements

• Support Expr for holidays in business day calculations (#26193)
• Parameter for pivot to always include value column name (#26730)
• Raise error in .collect_schema() when arr.get() is out-of-bounds (#26866)

... (truncated)

Commits

• 4f31f72 fix: Fix ColumnNotFound due to projection between filter/cache in CSPE (#26946)
• 71873e5 bump
• 39d1d4c fix: Fix the loop bounds in `BitmapBuilder::extend_each_repeated_from_slice_u...
• 0f5ae40 fix: Default engine as streaming for collect_batches (#26932)
• 266141e lockfile
• 259723f Python Polars 1.39.1
• 1b71c72 fix: Fix error passing Series of dates to business functions (#26927)
• 16725ce fix: Propagate null in min_by / max_by for all-null by groups (#26919)
• 914c8c5 docs: Query Profiler addition to User Guide (#26623)
• 45dd3e1 fix: Fix panic on lazy concat->filter->slice with CSPE (#26907)
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