WooCommerce Deposits 2.3.1

* Fix - Allow 0% entry for the initial payment in a payment plan.
* Fix - Payment plan description hidden when pay in full is the default payment option.
* Dev - Added new GitHub Workflow to run Quality Insights Toolkit tests.

* Dev - Bump WooCommerce "tested up to" version 7.8.
* Dev - Bump WooCommerce minimum supported version from 6.8 to 7.2.
* Dev - Bump WordPress minimum supported version from 5.8 to 6.1
* Dev - Migrate end-to-end tests to Playwright.

* Fix – Conflict with WooCommerce Bookings in which customers are not able to book multiple dates of the same product through a single checkout.
* Fix – Tax not applied for scheduled payments when an order placed using block-based checkout.
* Dev – Bump WooCommerce “tested up to” version 7.6.
* Dev – Bump WordPress minimum supported version from 5.6 to 5.8.
* Dev – Bump WordPress “tested up to” version 6.2