[query] test utils needs to use binary I/O for binary data (#10381)
[query] test utils needs to use binary I/O for binary data (#10381)

* [query] test utils needs to use binary I/O for binary data

I have no idea how this ever worked. It should have triggered UTF-8 decoding errors.

* now passes service and local test
hail-is/hail,hail-is/hail,hail-is/hail,hail-is/hail,hail-is/hail,hail-is/hail,hail-is/hail,hail-is/hail