[Rust][DataFusion] TPC-H Query 6 has a wrong result

TPC-H Query 6 gives a wrong result according to the test in the benchmarks.

TPCH_DATA=[..]/tpch-dbgen cargo test --release
Query 6 iteration 0 took 6137.1 ms
Query 6 avg time: 6137.09 ms
thread 'tests::q6' panicked at 'assertion failed: `(left == right)`
 left: `["123141078.23"]`,
right: `["75207768.18550001"]`', benchmarks/src/bin/tpch.rs:1684:17

alamb