parquet tests fails inconsistently in CI

[deependujha]

🐛 Bug

Parquet tests fail inconsistently in CI, mostly due to timeout, waiting for index file to be available. Possibly, multiple parquet tests leaking the environment.

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Expected behavior

Additional context

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[snakefood3232]

I've noticed your parquet tests are failing inconsistently due to timeouts related to index file availability. I'd handle this by isolating the test environment or ensuring proper teardown to prevent leaks causing these issues. I can have a PR ready for review within 48 hours. I've previously optimized data pipeline tests in CI environments.