2019-06-16 pkgmaster is not getting security updates. This was fixed, now
it's broken again. Can someone figure out why it keeps happening?

https://dev1galaxy.org/viewtopic.php?pid=16504#p16504

$ apt-cache policy thunderbird
1:60.7.1-1~deb9u1 500
         500 http://auto.mirror.devuan.org/merged ascii-security/main 
amd64 Packages
1:60.7.0-1~deb9u1 500
         500 http://pkgmaster.devuan.org/merged ascii-security/main amd64 
Packages