Fix FilesystemMap::getIterator() return type

[geoffrey-brier]

Hello :wave:

I fixed the following deprecation :

Deprecated: Return type of Knp\Bundle\GaufretteBundle\FilesystemMap::getIterator() should either be compatible with IteratorAggregate::getIterator(): Traversable, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /srv/vendor/knplabs/knp-gaufrette-bundle/FilesystemMap.php on line 58

I'm not sure if we should bump the minimal PHP version as well, let me know if it's all right with you :)

[adpeyre]

Release soon ? :)

[Nek-]

Hello,

Thank you very much for contributing to this repository but it only partially addressed the topic. This is why I created https://github.com/KnpLabs/KnpGaufretteBundle/pull/272 which fixes everything and will be released in a new major version.