Arrow casts this internal but apparently copies the string to bytes. This codes uses the stringToBytes helper which does not copy using the `unsafe.StringData` API.

```
name      old time/op    new time/op    delta
Query-24     440µs ± 6%     398µs ± 8%  -9.59%  (p=0.032 n=5+5)

name      old alloc/op   new alloc/op   delta
Query-24     470kB ± 0%     460kB ± 0%  -2.12%  (p=0.008 n=5+5)

name      old allocs/op  new allocs/op  delta
Query-24     2.79k ± 0%     2.53k ± 0%  -9.25%  (p=0.008 n=5+5)
```