rest module of core deprecated class Symfony\Component\HttpKernel\Event\FilterResponseEvent:

Line src/EventSubscriber/ResourceResponseSubscriber.php
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67 Parameter $event of method Drupal\rest\EventSubscriber\ResourceResponseSubscriber::onResponse() has typehint with
deprecated class Symfony\Component\HttpKernel\Event\FilterResponseEvent:
since Symfony 4.3, use ResponseEvent instead

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Line tests/src/Unit/EventSubscriber/ResourceResponseSubscriberTest.php
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42 Instantiation of deprecated class Symfony\Component\HttpKernel\Event\FilterResponseEvent:
since Symfony 4.3, use ResponseEvent instead
145 Instantiation of deprecated class Symfony\Component\HttpKernel\Event\FilterResponseEvent:
since Symfony 4.3, use ResponseEvent instead
195 Instantiation of deprecated class Symfony\Component\HttpKernel\Event\FilterResponseEvent:
since Symfony 4.3, use ResponseEvent instead