tests: fix types of several test data sets
these are currently accepted by swh.model, but won't be any more as soon as we activate type validation in swh.model.
Migrated from D2908 (view on Phabricator)
these are currently accepted by swh.model, but won't be any more as soon as we activate type validation in swh.model.
Migrated from D2908 (view on Phabricator)