Update SECURITY.md and default configs for advisory topics [5.19.x]#2058

cshannon merged 1 commit into

apache:activemq-5.19.xapache/activemq:activemq-5.19.xfrom

cshannon:backport-2055-5.19.xcshannon/activemq:backport-2055-5.19.xCopy head branch name to clipboard