build(deps): bump polars from 0.20.29 to 0.20.30

[dependabot[bot]]

Bumps polars from 0.20.29 to 0.20.30.

Release notes

Sourced from polars's releases.

Python Polars 0.20.30

⚠️ Deprecations

• Add Series/Expr.has_nulls and deprecate Series.has_validity (#16488)
• Deprecate tree_format parameter for LazyFrame.explain in favor of format (#16486)

🚀 Performance improvements

• improved numeric fill_(forward/backward) (#16475)
• only rechunk once per aggregate (#16469)

✨ Enhancements

• Minor DataFrame.__getitem__ improvements (#16495)
• Add is_column_selection() to expression meta, enhance expand_selector (#16479)
• Add Series/Expr.has_nulls and deprecate Series.has_validity (#16488)
• NDarray/Tensor support (#16466)

🐞 Bug fixes

• Fix df.chunked for struct (#16504)
• Mix of column and field expansion (#16502)
• Fix split_chunks for nested dtypes (#16493)
• Fix handling NaT values when creating Series from NumPy ndarray (#16490)
• Fix boolean trap issue in top_k/bottom_k (#16489)
• Handle struct.fields as special case of alias (#16484)
• Correct schema for list.sum (#16483)
• allow search_sorted directly on multiple chunks, and fix behavior around nulls (#16447)
• Fix use of COUNT(*) in SQL GROUP BY operations (#16465)
• respect nan_to_null when using multi-thread in pl.from_pandas (#16459)
• write_delta() apparently does support Categorical columns (#16454)

📖 Documentation

• Update the Overview section of the contributing guide (#15674)
• Use pl.field inside with_fields examples. (#16451)
• Change ordering of values in example for cum_max (#16456)

🛠️ Other improvements

• Refactor Series/DataFrame.__getitem__ logic (#16482)

Thank you to all our contributors for making this release possible! @​BGR360, @​alexander-beedie, @​cmdlineluser, @​coastalwhite, @​itamarst, @​marenwestermann, @​mdavis-xyz, @​messense, @​orlp, @​ritchie46 and @​stinodego

Commits

• 4936594 python Polars 0.20.30 (#16506)
• 805acd8 fix: Fix df.chunked for struct (#16504)
• af3a42f fix: Mix of columnd and field expansion (#16502)
• 3e8e6a5 feat(python): Minor DataFrame.__getitem__ improvements (#16495)
• f1f7144 docs: Update the Overview section of the contributing guide (#15674)
• 5b25fb8 refactor(python): Refactor Series/DataFrame.__getitem__ logic (#16482)
• d265cd1 fix: Fix split_chunks for nested dtypes (#16493)
• cd04f3d feat: Add is_column_selection() to expression meta, enhance `expand_selecto...
• 9eedeb9 feat(python): Add Series/Expr.has_nulls and deprecate Series.has_validity...
• a6f571f fix(python): Fix handling NaT values when creating Series from NumPy ndarray ...
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