PHPUnit comparator breaks under PHPUnit 10/comparator 5

[Firehed]

There was a breaking change going from sebastian/comparitor:4 to 5, which by default you'll pull in updating to PHPUnit 10.

At a glance, there are two adjustments:

• don't call parent::construct
• add : bool return type to accepts

I think the latter is fine for forward compatibility, but the former may require some hacking to get around the loss of constructor

I'll take a quick attempt at a PR to address this.

[frederikbosch]

Fixed by #784.