Is there a simple apt command for upgrade to a "point" release? eg, from 18.04 -> 18.04.2

So I installed 18.04 LTS from .iso, and am mainly interested in stability over "having the latest".

I have seen that 18.04.2 is released, but the documentation suggests downloading a fresh .iso, which seems like a lot of install work (and risk) for a minor point release.

Surely there must be a simple apt command which does this, similar to if I was upgrading from 16.04 or 17.* releases?

Note: I do not want to upgrade to 18.10 or 19.04 at this time.