Build(deps): Update polars requirement from 0.46.0 to 0.51.0

[dependabot]

Updates the requirements on polars to permit the latest version.

Release notes

Sourced from polars's releases.

Rust Polars 0.51.0

💥 Breaking changes

• Remove, deprecate or change eager Exprs to be lazy compatible (#24027)

🚀 Performance improvements

• Use specialized decoding for all predicates for Parquet dictionary encoding (#24403)
• Allocate only for read items when reading Parquet with predicate (#24401)
• Don't aggregate groups for strict cast if original len (#24381)
• Allocate only for read items when reading Parquet with predicate (#24324)
• Native streaming int_range with len or count (#24280)
• Lower arg_unique natively to the streaming engine (#24279)
• Move unordering optimization to end (#24286)
• Do ordering simplification step after common sub-plan elimination (#24269)
• Always simplify order requirements in IR (#24192)
• Basic de-duplication of filter expressions (#24220)
• Cache the IR in pipe_with_schema (#24213)
• Lower arg_where natively to streaming engine (#24088)
• Lower Expr.shift to streaming engine (#24106)
• Lower order-preserving groupby to streaming engine (#24053)
• Lower .sort(maintain_order=True).head() to streaming top_k (#24014)
• Lower top-k to streaming engine (#23979)
• Allow order pass through Filters and relax to row-seperable instead of elementwise (#23969)

✨ Enhancements

• Roundtrip BinaryOffset type through Parquet (#24344)
• Add opt-in unstable functionality to load interval types as Struct (#24320)
• Add user guide section on AWS role assumption (#24421)
• Support unique / n_unique / arg_unique for array columns (#24406)
• Support S3 virtual-hosted–style URI (#24405)
• Remove explicit file create for local async writes (#24358)
• Support Partitioning sinks in cloud (#24399)
• User-friendly error message on empty path expansion (#24337)
• Add Polars security policy (#24314)
• Allow pl.Expr.log to take in an expression (#24226)
• Implement diff() in streaming engine (#24189)
• Enable Expr.diff(n) for negative n (#24200)
• Allow upcasting null-typed columns to nested column types in scans (#24185)
• Log pyarrow predicate conversion result in sensitive verbose logs (#24186)
• Add a deprecation warning for pl.Series.shift(Null) (#24114)
• Improve Debug formatting of DataType (#24056)
• Add cum_* as native streaming nodes (#23977)
• Add peak_{min,max} support for booleans (#24068)
• Add DataFrame.map_columns for eager evaluation (#23821)
• Add native streaming for peaks_{min,max} (#24039)
• IR graph arrows, monospace font, box nodes (#24021)
• Add DataTypeExpr.default_value (#23973)
• Lower rle to a native streaming engine node (#23929)

... (truncated)

Commits

• 400ca33 chore: Update versions (#24508)
• 2155cbf fix: Ignore Iceberg list element ID if missing (#24479)
• 1ad3d5d chore(python): Add additional unit tests for pl.concat (#24487)
• e2d9e26 fix: Fix panic on streaming full join with coalesce (#23409)
• 6505e1e test: Refactor parametric tests for as_struct on aggstates (#24493)
• ea109ed perf: Native streaming .mode() expression (#24459)
• c42929d refactor: Use PlanCallback in name.map_* (#24484)
• 152e176 feat(python): Add unstable pl.Config.set_default_credential_provider (#24434)
• cdd247a fix: Fix AggState on all_literal in BinaryExpr (#24461)
• b0d2b8c refactor(rust): Replace unsafe with collect (#24494)
• Additional commits viewable in compare view

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