I happened to be testing a distribution upgrade of Lubuntu 16.04 to Lubuntu 18.04 and can confirm that no snaps were installed during the upgrade when using ubuntu-release-upgrader version 18.04.21.
I happened to be testing a distribution upgrade of Lubuntu 16.04 to Lubuntu 18.04 and can confirm that no snaps were installed during the upgrade when using ubuntu- release- upgrader version 18.04.21.