mailman:2.1 security and bug fix update

3:2.1.29-10 - Fix match patter to reduce false allocation 3:2.1.29-9 - Fix for CVE-2020-12137 3:2.1.29-8 - Drop unversioned python from comments. 3:2.1.29-7 - Change attr of /etc/mailman 3:2.1.29-6 - Update run directory references 1805954 - fix 1188043 - set 2775 permission for /etc/mailman...