Update changelog in readme

Author: opr

readme.txt

@@ -1,5 +1,5 @@
 === WooCommerce Blocks ===
-Contributors: automattic, woocommerce, claudiulodro, tiagonoronha, jameskoster, ryelle, levinmedia, aljullu, mikejolley, nerrad, joshuawold, assassinateur, haszari, mppfeiffer, nielslange, opr18, ralucastn
+Contributors: automattic, woocommerce, claudiulodro, tiagonoronha, jameskoster, ryelle, levinmedia, aljullu, mikejolley, nerrad, joshuawold, assassinateur, haszari, mppfeiffer, nielslange, opr18, ralucastn, tjcafferkey
 Tags: gutenberg, woocommerce, woo commerce, products, blocks, woocommerce blocks
 Requires at least: 5.8
 Tested up to: 5.8
@@ -85,6 +85,17 @@ Release and roadmap notes available on the [WooCommerce Developers Blog](https:/
 
 == Changelog ==
 
+== 5.9.0 - 2021-09-13 =
+
+#### Enhancements
+
+- Add extensibility point for extensions to filter payment methods. ([4668](https://github.com/woocommerce/woocommerce-gutenberg-products-block/pull/4668))
+
+#### Bug Fixes
+
+- Twenty Twenty: Adjust font styles for filter and product grid blocks. ([4701](https://github.com/woocommerce/woocommerce-gutenberg-products-block/pull/4701))
+
+
 = 5.8.0 - 2021-08-31 =
 
 #### Enhancements