I'm hosting an instance of collection space 4.2 on my Ubuntu server, and one of our developers is asking for an upgrade to 4.3. I'm finding a lot of documentation that for thing that need to happen during an upgrade from <4.2 => 4.2, but I'm not seeing anything in the documentation about how to do a simple minor version upgrade. Can anyone help me figure out what I need to do to upgrade from 4.2 => 4.3 on a Ubuntu 14.04 server?