Brief summary of issue / Description of requested feature:

I noticed that I didn't get any updates for my Linux ptb anymore and also at https://make.mudlet.org/snapshots/
are only new version for MacOsX.
I know that the Windows one is waiting for certificates but there should be new versions for the Linux one.

Steps to reproduce the issue / Reasons for adding feature:

1. Open Mudlet-ptb in Linux (in my case Ubuntu 20.04)
2. No updates

Error output / Expected result of feature

There should be updates every day (if there were commits to the development branch)

Extra information, such as Mudlet version, operating system and ideas for how to solve / implement:

My latest ptb version is 2020-08-04-569e2 but I'm not sure if that was the latest one without updates
as I didn't check every day.