Framework Documentation - Router Package

Updating from v3 to v4

The following changes were made to the Router package between v3 and v4.

Minimum supported PHP version raised

All Framework packages now require PHP 8.3 or newer.

Serialization library jeremeamia/superclosure has been replaced with opis/closure

The library used for serialization of closures, jeremeamia/superclosure, is abandoned and has for this release been replaced with the supported library opis/closure.