Does snapcraft 4.6 no longer use the file
.snapcraft/snapcraft.cfg? A quick look at https://github.com/snapcore/snapcraft/pull/3472 suggests this to be the case.
If this file is no longer supported, what is the preferred way to provide login information to
snapcraft when it is run in something like CI? Documentation like https://circleci.com/docs/2.0/build-publish-snap-packages/ still suggests using