4.7.1 Fully Support PHP 8.2, 8.3 and 8.4

Improvements

• Fully support PHP 8.2, 8.3 and 8.4 by @marc-mabe in #160
• Clearify serialization error message by @marc-mabe in #161

Bugfixes

• fix deprecation warning in EnumSet and EnumMap

BC-breaks

None