Deprecation warning for `memcpy` with `bytestring >= 0.11.5`

```
Data/Text/ICU/Spoof.hsc:433:7: warning: [-Wdeprecations]
    In the use of ‘memcpy’
    (imported from Data.ByteString.Internal, but defined in bytestring-0.11.5.0:Data.ByteString.Internal.Type):
    Deprecated: "Use Foreign.Marshal.Utils.copyBytes instead"
    |
433 |       memcpy dptr bptr (fromIntegral dlen))
    |       ^^^^^^
```