v6.3.9

Changelog (v6.3.8...v6.3.9)

• bug symfony/symfony#52786 [Serializer] Revert allowed attributes fix (@mtarld)
• bug symfony/symfony#52767 [Serializer] Fix normalization relying on allowed attributes only (@mtarld)
• bug symfony/symfony#52172 [Serializer] Fix denormalizing empty string into object|null parameter (@Jeroeny)
• bug symfony/symfony#52681 [Serializer] Fix support for DiscriminatorMap in PropertyNormalizer (@mtarld)
• bug symfony/symfony#52680 [Serializer] Fix access to private properties/getters when using the @Ignore annotation (@mtarld)
• bug symfony/symfony#52713 [Serializer] Fix deserialization_path missing using contructor (@mtarld)
• bug symfony/symfony#52683 [Serializer] Fix constructor deserialization path (@mtarld)
• bug symfony/symfony#52589 [Serializer] Fix XML attributes not added on empty node (@mtarld)
• bug symfony/symfony#52626 [Serializer] Fix denormalizing date intervals having both weeks and days (@oneNevan)
• bug symfony/symfony#52578 [Serializer] Fix denormalize constructor arguments (@mtarld)