Issue #2401113 by kim.pepper, larowlan: Update Zend Feed to latest stable

composer.json

composer.lock

...gregator/src/Plugin/aggregator/fetcher/DefaultFetcher.php

core/vendor/composer/installed.json

...r/zendframework/zend-escaper/Zend/Escaper/CONTRIBUTING.md

...endor/zendframework/zend-escaper/Zend/Escaper/Escaper.php

...dor/zendframework/zend-escaper/Zend/Escaper/composer.json

.../vendor/zendframework/zend-feed/Zend/Feed/CONTRIBUTING.md

...amework/zend-feed/Zend/Feed/PubSubHubbub/PubSubHubbub.php

...zend-feed/Zend/Feed/Reader/Extension/Syndication/Feed.php

...or/zendframework/zend-feed/Zend/Feed/Reader/Feed/Atom.php

...dor/zendframework/zend-feed/Zend/Feed/Reader/Feed/Rss.php

...endor/zendframework/zend-feed/Zend/Feed/Reader/Reader.php

...zendframework/zend-feed/Zend/Feed/Writer/AbstractFeed.php

...vendor/zendframework/zend-feed/Zend/Feed/Writer/Entry.php

...framework/zend-feed/Zend/Feed/Writer/ExtensionManager.php

...mework/zend-feed/Zend/Feed/Writer/Renderer/Entry/Atom.php

core/vendor/zendframework/zend-feed/Zend/Feed/composer.json

...dor/zendframework/zend-stdlib/Zend/Stdlib/ArrayObject.php

...lib/Zend/Stdlib/ArrayObject/PhpReferenceCompatibility.php