Update stripe-php from 6.19.5 to 6.30.4

composer.lock

vendor/composer/installed.json

vendor/stripe/stripe-php/.coveralls.yml

vendor/stripe/stripe-php/.github/ISSUE_TEMPLATE.md

vendor/stripe/stripe-php/.travis.yml

vendor/stripe/stripe-php/.vscode/extensions.json

vendor/stripe/stripe-php/.vscode/settings.json

vendor/stripe/stripe-php/CHANGELOG.md

vendor/stripe/stripe-php/LICENSE

vendor/stripe/stripe-php/VERSION

vendor/stripe/stripe-php/composer.json

vendor/stripe/stripe-php/examples/oauth.php

vendor/stripe/stripe-php/init.php

vendor/stripe/stripe-php/lib/Account.php

vendor/stripe/stripe-php/lib/AccountLink.php

...or/stripe/stripe-php/lib/ApiOperations/NestedResource.php

vendor/stripe/stripe-php/lib/ApiRequestor.php

vendor/stripe/stripe-php/lib/ApplicationFee.php

vendor/stripe/stripe-php/lib/Card.php

vendor/stripe/stripe-php/lib/Charge.php