I use Ronsinol to flush the trigger. I don't do it often, perhaps once a year, and I use compressed air to dry it. No lube. Lube, IMO, just collects dust
Cleaning the bolt interior/exterior, also annually, involves flushing it with solvent, blowing dry with compressed air and lubricating the outer surfaces with a light coat of ATF. When I don't have ATF I use Kroil. I lube the bolt lugs with a spot of disc brake grease and the firing pin/spring assembly with a light coating of graphite based grease.
I'm very careful not to use too much of any lubricant in any of those areas to avoid lubricants from infiltrating the trigger group assembly.