Update: Certificate scanning has been added.
This feature is on our customer wish list, but we do not have an estimated release date for it at this time. You could potentially use a deployment package to retrieve the information and print it to a separate file. General information on Lansweeper's deployment module can be found
here. You'll need to research the commands you need to retrieve the information though. I believe there are some PowerShell commands you can use to retrieve certificate information.