6 files declare their use of ModerationInformationInterface in Workbench Moderation 8

EntityModerationForm.php in src/Form/EntityModerationForm.php

EntityRevisionConverter.php in src/ParamConverter/EntityRevisionConverter.php

LatestRevisionCheck.php in src/Access/LatestRevisionCheck.php

ModerationOptOutPublishNode.php in src/Plugin/Action/ModerationOptOutPublishNode.php

ModerationOptOutUnpublishNode.php in src/Plugin/Action/ModerationOptOutUnpublishNode.php

ModerationStateValidator.php in src/Plugin/Validation/Constraint/ModerationStateValidator.php