security/base-audit: upgrade 0.3 -> 0.4

• Since all supported FreeBSD versions have anticongestion function in /etc/default/periodic.conf, always use it to insert random sleep with non-interactive mode.
• pet portlint

PR: 236751
Submitted by: Yasuhiro KIMURA <yasu@utahime.org>
Approved by: Miroslav Lachman <000.fbsd@quip.cz> (maintainer)