Polars Rust 0.55.2：云IO限速器与修复

✨ Enhancements

• Add adaptive HTTP rate-limiter for cloud IO (#28591)

🐞 Bug fixes

• Unsoundness in rayon block_on (#28709)
• Check for (shallow) IR node equality on top of hashing in CSPE (#28506)

📖 Documentation

• Document that arg_extremum functions return any index on ties (#28691)

Thank you to all our contributors for making this release possible!

@dancsi, @dsprenkels, @kdn36, @orlp and @ritchie46