Update changelog and testing steps

Author: Aljullu

docs/testing/releases/460.md

@@ -59,6 +59,12 @@ After:
 * Insert a NEW cart block instance into a page.
 * Confirm the empty cart template does not include a link to browse the shop.
 
+### Show cart item subtotal instead of total in Cart and Checkout blocks (#3905)
+
+1. Add a product to your cart.
+2. Go to the Cart block and apply a coupon with a fixed cart discount.
+3. Verify the cart item subtotal doesn't change when the coupon discount is applied.
+
 
 ### Smoke Testing
 

readme.txt

@@ -90,6 +90,7 @@ Release and roadmap notes available on the [WooCommerce Developers Blog](https:/
 #### Bug Fixes
 
 - Handle out-of-stock product visibility setting in All Products block. ([3859](https://github.com/woocommerce/woocommerce-gutenberg-products-block/pull/3859))
+-  Show cart item subtotal instead of total in Cart and Checkout blocks ([#3905](https://github.com/woocommerce/woocommerce-gutenberg-products-block/pull/3905))
 
 #### Various