Implement __serialize to avoid deprecation warning on php 8.2

[nicosp]

Fixes the following on PHP 8.2:

AuditStash\Event\AuditUpdateEvent implements the Serializable interface, which is deprecated. Implement __serialize() and __unserialize() instead (or in addition, if support for old PHP versions is necessary)

[dereuromark]

This does seem to miss a test But fair enough

[nicosp]

This does seem to miss a test But fair enough

I thought this was covered as part of testing with php 8.2.

[dereuromark]

dont think so, it only says so far the class is valid (no syntax error). no assert on the method returns yet.

[nicosp]

dont think so, it only says so far the class is valid (no syntax error). no assert on the method returns yet.

I might be missing something but the tests are:

$serialized = serialize($event);
$this->assertEquals($event, unserialize($serialized));

My understanding is that php 8.2 will automarically use the __ methods while previous versions will use the non-underscored versions.

[dereuromark]

OK, in that case you seem to be right.