Log Message:
www/php-apcu: update to 5.1.23

5.1.23 (2023-11-11)

* Revert use of monotonic clock for TTL (#451)
* Fix a crash when serializing packed arrays (e.g. lists) in PHP 8.2+ with
  `apc.serializer=default`.
* Reduce memory usage when serializing packed arrays (e.g. lists) in PHP
  8.2+ with `apc.serializer=default`.
* Speed up serializing arrays with `apc.serializer=default`.
* Reduce memory usage when unserializing instances of the empty array in
  PHP 7.3+.
* Removed no longer working apcue extension.
* Increased limit on maximum number of slots.
* Made tests compatible with PHP 8.3.