Investigate high memory use by license detector

[willmurphyscode]

Interesting discussion. I think swapping some data to disk would be very useful. Not only for large targets with many dependencies but also when Syft is runing as a container or a DaemonSet with limited memory resources. Most of the time it will fails with OOMKilled errors for mid size images.

I'm not sure it's relevant to the discussion, but I also found that the license checker is allocating quite a lot of memory as well, which does not make things easy for the whole memory consumption concerns. Do you have any idea, why it's allocating so much memory based on the profile, which looks very similar to different images I tried scanning?

Originally posted by @danielpacak in #3263