WooCommerce Bookings Availability 1.2.8

* Fix - Adjust styles of bookings calendar and schedule block UI when title is larger than block width.
* Fix - Ensure the Booking Availability Calendar shows the availability of the product relative to the viewer's time.
* Fix - Show sold out items on frontend when selected.
* Update - Bump NPM to v8.
* Update - Bump node to v16

* Fix - Bookable products are sorted as per their menu order.
* Fix - Mobile booking calendar issues.

* Add - PHP Compatibility GitHub Action.
* Tweak - WC 6.8.0 compatibility.