test: update storage tests to (future) swh.journal 0.0.30
which will handle swh.model objects everywhere instead of dicts.
Depends on !381 (closed).
Migrated from D2972 (view on Phabricator)
which will handle swh.model objects everywhere instead of dicts.
Depends on !381 (closed).
Migrated from D2972 (view on Phabricator)