* Fix - Error when creating the same tag with different case.
* Fix - Missing Guest Data for blockified checkout pages.
* Tweak - Remove deprecated async requests.
* Dev - Add QIT workflow.
* Dev - Add a manual workflow run for PHP unit tests.
* Dev - E2E: Install WC by adding it in `.wp-env.json`'s `plugins` section.
* Update - Bump minimum PHP version to 7.4.
* Dev - Remove deprecated background processing classes and add comments to remove redundant phpcs and semgrep warnings.
* Tweak - WC 8.8 compatibility.
* Update - Remove the ActiveCampaign SDK and use version 3 of the REST API for actions.
