WooCommerce Product Bundles 8.1.2

* New - Introduced 'wp wc pb sync-stock' WP CLI command to handle parent stock syncing.
* New - Introduced filter 'woocommerce_pb_sync_stock_via_cli' to handle syncing solely through WP CLI.
* New - Introduced filter 'woocommerce_pb_sync_parent_stock_use_action_scheduler' to enable syncing through the Action Scheduler.
* New - Introduced filters 'woocommerce_pb_sync_parent_stock_as_batch_size' and 'woocommerce_pb_sync_parent_stock_as_interval' to fine-tune batch sizes and intervals when syncing stock.
* New - Introduced new onboarding tutorial.
* Tweak - Improved compatibility with Min/Max Quantities and Bundles that contain variations.

* Tweak - Improved product data controller to prevent potential fatal errors from integrations.

* New - Important: Added compatibility with PHP 8.3.
* New - Important: Product Bundles now requires Composite Products 9.0+.
* New - Important: Product Bundles now requires Product Add-Ons 6.7.0+.
* Fix - Fixed an issue that prevented the 'Sale' badge from showing up in Bundles with only optional items, whose Min Bundle Size was greater than 1.
* Fix - Fixed an issue where the 'woocommerce_variation_option_name' hook was called with the incorrect number of arguments.