WooCommerce UPS Versandmethode 3.9.4

* Fix - Address validation compatibility with WooCommerce Shipping.

* Tweak - WooCommerce 10.5 Compatibility.

* Tweak - WooCommerce 10.3 compatibility.

* Tweak - WooCommerce 10.2 compatibility.

* Tweak - WooCommerce 10.1 compatibility.

* Tweak – Replace UPS SurePost service with new UPS Ground Saver service.
* WOOUPS-18 - WooCommerce 10.0 compatibility.

Fix – Resolved a critical error caused by unexpected data format in UPS API response under rare conditions.

* Tweak - WooCommerce 9.9 compatibility.

* Update Requires headers for WooCommerce compatibility.
* Update to ubuntu-latest to fix QIT tests.

* Add - New box packer with setting option for box packer library selection.