New upstream version 1.7.4

CHANGELOG.md

src/Input/CreatePlatformEndpointInput.php

src/Input/CreateTopicInput.php

src/Input/DeleteEndpointInput.php

src/Input/DeleteTopicInput.php

src/Input/ListSubscriptionsByTopicInput.php

src/Input/PublishBatchInput.php

src/Input/PublishInput.php

src/Input/SubscribeInput.php

src/Input/UnsubscribeInput.php