Security update for spamassassin

Open Source Vulnerabilities SUSE-SU-2019:2011-1

This update for spamassassin to version 3.4.2 fixes the following issues: Security issues fixed: - CVE-2018-11781: Fixed an issue where a local user could inject code in the meta rule syntax (bsc#1108748). - CVE-2018-11780: Fixed a potential remote code execution vulnerability in the PDFInfo plugin (bsc#1108750). - CVE-2017-15705: Fixed a denial of service through unclosed tags in crafted emails (bsc#1108745). - CVE-2016-1238: Fixed an issue where perl would load modules from the current directory (bsc#1108749). Non-security issues fixed: - Use systemd timers instead of cron (bsc#1115411) - Fixed incompatibility with Net::DNS >= 1.01 (bsc#1107765) - Fixed warning about deprecated regex during sa-update (bsc#1069831)