Log Message:
devel/ruby-async: update to 2.3.0

2.3.0 (2022-12-03)

What's Changed

* Convert tests to sus. by @ioquatix in #188
* Use a linked list for the barrier implementation. by @ioquatix in #192
* Add a concurrency primitive for waiting for a specific number of tasks to
  complete. by @ioquatix in #189
* Better support for Fiber.set_scheduler. by @ioquatix in #194
* Rename Async::LimitedBarrier to Async::Waiter based on feedback. by
  @ioquatix in #196
* Relax io-event dependency. by @ioquatix in #200
* Implement semaphore using linked list. by @ioquatix in #203