Update readme.txt with Changelog for 4.8.0

Author: ralucaStan

readme.txt

@@ -85,6 +85,19 @@ Release and roadmap notes available on the [WooCommerce Developers Blog](https:/
 
 == Changelog ==
 
+= 4.8.0 - 2021-04-01 =
+
+#### Enhancements
+
+- Registered payment methods now have access to the `shouldSavePayment` prop in their components (which indicates whether the shopper has checked the save payment method checkbox). ([3990](https://github.com/woocommerce/woocommerce-gutenberg-products-block/pull/3990))
+- Payment methods implementing the `savedTokenComponent` configuration property will now have the `onPaymentProcessing` event available to the registered component. ([3982](https://github.com/woocommerce/woocommerce-gutenberg-products-block/pull/3982))
+
+#### Bug Fixes
+
+- Fix customer address country saving to orders in certain circumstances. ([4013](https://github.com/woocommerce/woocommerce-gutenberg-products-block/pull/4013))
+- Prevent error messages returned by the API from displaying raw HTML. ([4005](https://github.com/woocommerce/woocommerce-gutenberg-products-block/pull/4005))
+- Fix the Proceed to checkout button click bug happening when the Coupon error is visible in the Cart block. ([3996](https://github.com/woocommerce/woocommerce-gutenberg-products-block/pull/3996))
+
 = 4.7.0 - 2021-03-16 =
 
 #### Enhancements