0.62.2

What's Changed

• examples: load the LED summarizer explicitly for transformers 5.22 by @shcheklein in #2130
• fix(parquet): read only the picked columns with ParquetFileFormat by @shcheklein in #2123
• perf(tabular): prefetch small files in partial reads by @shcheklein in #2121
• Union types by @dmpetrov in #1824
• union and optional docs by @dmpetrov in #2043
• ci: run tests on free runners and split them across shards by @shcheklein in #2133

Full Changelog: 0.62.1...0.62.2