Add support for php 8.2

[xelaris]

See phpspec/phpspec#1435 for a similar update and for the reason why ci isn't successfully yet, as phpspec does't support 8.2 yet.

[Nek-]

Sorry but this is not enough for making Gaufrette compatible with PHP 8.2. IIRC the stream integration is not working anymore.

[xelaris]

@Nek- thank you for the quick feedback.

We are using the stream integration in our project. Actually, the reason for this PR is, that the StreamWrapper causes the deprecation about the dynamic $context property, which is (wrongly?) considered a direct deprecation by the Symfony PHPUnit bridge.

I found #275, which mentions some issues. In our simple use-case (file_put_contents with AWS S3 adapter) it seems to work fine though.

Do you have any guidance about what else needs to be done to get Gaufrette compatible with PHP 8.2? I might find the time to have a look at it.

In any case, I guess this PR has to wait for release of phpspec which is compatible with PHP 8.2 for all tests become green eventually. Or do you think this PR should be updated to temporarily require phpspec/phpspec: "dev-main@dev"?

[toooni]

Is there still a reason to not merge this PR? Except for these deprecation messages, our use case works fine on PHP 8.2.

[PedroTroller]

Thank you very much. I took the liberty of validating your PR which remained in draft. We'll put your PR in the next version, v0.12.0