### Is your feature request related to a problem or challenge? #16351 added modular encryption reading and writing. We should enable multi threaded encrypted writing. ### Describe the solution you'd like `output_single_parquet_file_parallelized` in `ParquetSink` should use encryption properties passed with `WriterProperties`. ### Describe alternatives you've considered Current `arrow-rs` API does not provide public API for passing `FileEncryptor` (for security reasons) so no good alternatives were identified. ### Additional context This will require an upstream change in `arrow-rs` that is currently in draft https://github.com/apache/arrow-rs/pull/7818.