Add security advisories affecting 13.5R, 14.3R, 14.4R and 15.0R
FreeBSD-SA-26:06.tcp affects FreeBSD 14.3R, 14.4R and 15.0R
FreeBSD-SA-26:07.nvmf affects FreeBSD 15.0R
FreeBSD-SA-26:08.rpcsec_gss affects all supported releases
FreeBSD-SA-26:09.pf affects FreeBSD 14.3R, 14.4R and 15.0R