What's new in at-spi2-core 2.49.91:
* collection: Avoid locking up if an object has a very large child count
* Fix possible NULL pointer dereference when deregistering an event listener.
* Various fixes for the new key grabbing API.
* Don't wait for a reply when registering or deregistering keystroke
listeners.
* Add a meson option to exclude the gtk2 atk-bridge module.