Update netdiscover to version 0.20 / rev 11 via SR 1279055
https://build.opensuse.org/request/show/1279055
by user pluskalm + anag_factory
- Update to version 0.20:
* Added full support to CIDR subnets. Thanks to Jefferson J. Raimon. @jeffersonraimon
* Fixed a fail to build from source with GCC 15. Thanks to Josh Ellithorpe. @zquestz
* Updated OUI table.