net-mgmt/net-snmp: Update to 5.9.1
re https://net-snmp.sourceforge.io/about/ChangeLog.html
libnetsnmp: - Fixed the mib-parsing-bug introduced shortly before 5.7 agent: - fixed rounding errors for disk percentage calculations openbsd: - better support for recent openbsd releases features: - bug fixes with minimalist support after additional user feedback Many other miscellaneous minor bug fixes
Approved by: maintainer (via private communication)