Issue #3375940: Rename CronUpdateStage to CronUpdateRunner

automatic_updates.install

automatic_updates.module

automatic_updates.services.yml

src/Commands/AutomaticUpdatesCommandBase.php

src/Commands/RunCommand.php

src/ConsoleUpdateStage.php

src/CronUpdateRunner.php

src/Validation/AdminStatusCheckMessages.php

src/Validation/StatusChecker.php

src/Validator/CronFrequencyValidator.php

src/Validator/VersionPolicyValidator.php

src/Validator/WindowsValidator.php

tests/src/Functional/AutomaticUpdatesFunctionalTestBase.php

tests/src/Functional/ErrorMessageOnStageDestroyTest.php

tests/src/Functional/StatusCheckFailureEmailTest.php

tests/src/Functional/StatusCheckTest.php

tests/src/FunctionalJavascript/UpdateSettingsFormTest.php

tests/src/Kernel/AutomaticUpdatesKernelTestBase.php

tests/src/Kernel/ConsoleUpdateStageTest.php

tests/src/Kernel/CronUpdateRunnerTest.php