Issue #3321282 by omkar.podey, Wim Leers, tedbow: Add 'declare(strict_types = 1)' where needed

automatic_updates.install

automatic_updates.module

automatic_updates.post_update.php

automatic_updates_extensions/src/BatchProcessor.php

automatic_updates_extensions/src/ExtensionUpdater.php

automatic_updates_extensions/src/Form/UpdateReady.php

automatic_updates_extensions/src/Form/UpdaterForm.php

...dates_extensions/src/Validator/UpdateReleaseValidator.php

...tomatic_updates_extensions_test_api/src/ApiController.php

...s/src/Kernel/AutomaticUpdatesExtensionsKernelTestBase.php

...tic_updates_extensions/tests/src/Traits/FormTestTrait.php

package_manager/package_manager.install

package_manager/package_manager.module

package_manager/src/ComposerUtility.php

package_manager/src/Event/CollectIgnoredPathsEvent.php

package_manager/src/Event/ExcludedPathsTrait.php

package_manager/src/Event/PostApplyEvent.php

package_manager/src/Event/PostCreateEvent.php

package_manager/src/Event/PostDestroyEvent.php

package_manager/src/Event/PostRequireEvent.php