9 files declare their use of WebformSubmissionConditionsValidatorInterface in Webform 8.5

ActionWebformHandler.php in src/Plugin/WebformHandler/ActionWebformHandler.php

DebugWebformHandler.php in src/Plugin/WebformHandler/DebugWebformHandler.php

EmailWebformHandler.php in src/Plugin/WebformHandler/EmailWebformHandler.php

ExampleWebformHandler.php in modules/webform_example_handler/src/Plugin/WebformHandler/ExampleWebformHandler.php

OptionsLimitWebformHandler.php in modules/webform_options_limit/src/Plugin/WebformHandler/OptionsLimitWebformHandler.php

RemotePostWebformHandler.php in src/Plugin/WebformHandler/RemotePostWebformHandler.php

SettingsWebformHandler.php in src/Plugin/WebformHandler/SettingsWebformHandler.php

WebformCardsManager.php in modules/webform_cards/src/WebformCardsManager.php

WebformHandlerBase.php in src/Plugin/WebformHandlerBase.php