Parquet Tests Cleanup Temporary Files

[tustvold]

Is your feature request related to a problem or challenge? Please describe what you are trying to do.

The parquet tests create a large amount of temporary files in /target when running tests, and these are never cleaned up. This is particularly painful for the fuzz tests which generate files with random names, and so the footprint will grow over time.

Describe the solution you'd like

Tests should automatically cleanup temporary files used for testing. Arrow is already using a tempfile crate that can do this, and so it probably makes sense to use this also