v6.4.26

Changelog (v6.4.25...v6.4.26)

• bug symfony/symfony#61746 [Serializer] Fix unknown type in denormalization errors when union type used in constructor (@d-mitrofanov-v)
• bug symfony/symfony#61727 Replace __sleep/wakeup() by __(un)serialize() for throwing and internal usages (@nicolas-grekas)
• bug symfony/symfony#61097 [Serializer] Fix normalizing objects with accessors having the same name as a property (@RafaelKr)
• bug symfony/symfony#61571 [Serializer] Fix dealing with asymmetric visilibity for properties (@santysisi)