v6.4.8

Changelog (v6.4.7...v6.4.8)

• bug symfony/symfony#54971 [Serializer] Cache readability/writability computation (@mtarld)
• bug symfony/symfony#49186 [Serializer] Improve exception message in UnwrappingDenormalizer (@andersonamuller)
• bug symfony/symfony#54913 [Serializer] Fix CurrentType for missing property (@ElisDN)
• bug symfony/symfony#54828 [Serializer] Fix GetSetMethodNormalizer not working with setters with optional args (@HypeMC)
• bug symfony/symfony#54804 [Serializer] separate the property info and write info extractors (@xabbuh)
• bug symfony/symfony#54714 [Serializer] convert empty CSV header names into numeric keys (@xabbuh)