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