Bump bytestring submodule to 0.12.1.0
If there are no surprises the commit here will be tagged and released as bytestring-0.12.1.0 in a few hours.
/cc @wz1000
If there are no surprises the commit here will be tagged and released as bytestring-0.12.1.0 in a few hours.
/cc @wz1000