Update WordPress version

Author: w3bdesign

README.md

@@ -33,7 +33,7 @@ Optional plugin:
 
 The current release has been tested and is confirmed working with the following versions:
 
-- WordPress version 5.8.2
+- WordPress version 5.9
 - WooCommerce version 5.9.0
 - WP GraphQL version 1.2.4
 - WooGraphQL version 0.6.1