[BUG] cuIO benchmarks generate larger files than expected

[vuule]

cuIO ORC and Parquet benchmarks generate larger files than previously (e.g. GDS blog data). Some observations:

• Only the cases where both cardinality and run length are set lead to small files.
• Cases where the data does not encode/compress well now generate files larger by ~20% (based on integral columns).

[github-actions[bot]]

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