PHP 8.4

[elrido]

With the release of Alpine 3.21, we now have 3 versions of PHP available there: 8.2, 8.3 and 8.4. Of course we plan to update from 8.3 to 8.4. From running our unit tests on 8.4 release candidates for the last few months we know that privatebin itself works fine and without any deprecation warnings, but we still get deprecation warnings out of the google cloud storage library.

This issue is mainly here to document the intent to update to 8.4 and the reason we have not done so yet: Once we know the 3rd party libraries work deprecation-warning-free, we can switch. This may take a while.

Alternatives: We disable deprecation warnings in PHP and upgrade anyway. We don't want the logs to clog up with messages when it otherwise works.

[elrido]

The 3rd-party libraries now are all fixed, so we can upgrade to 8.4 deprecation-free after or on the next release of PrivateBin. We can prepare a branch for this here, but shouldn't merge it yet, as it will cause the deprecation warnings with the current 1.7.5 release's dependencies.