benchmarks/stress-ng: Update to 0.13.04
Changes available at:
https://github.com/ColinIanKing/stress-ng/blob/master/debian/changelog
While updating, import a fix for the man page kindly provided by 0mp
Co-authored-by: Mateusz Piotrowski <0mp@FreeBSD.org>
PR: PR258105
Reported by: Graham Perrin <grahamperrin@gmail.com>