misc/py-wurlitzer: Update to 3.0.0

- fallback on cffi to detect stdout/stderr pointers
- use F_SETPIPE_SZ to set large pipe page size, if available
- use Bytes/StringIO for pipes

Changelog: https://github.com/minrk/wurlitzer/blob/main/CHANGELOG.md

Reported by:	portscout, Repology