Update README.md

Bump the plugin version.
https://wordpress.org/plugins/woocommerce-gateway-stripe/#developers

Author: sebastianmoran-archive

Execute a function on a child site/WooCommerce Stripe Gateway/README.md

@@ -1,6 +1,6 @@
 ## WooCommerce Stripe Gateway code snippets
 
-Tested version of WordPress 6.8.1, plugin version was WooCommerce Stripe Gateway 9.5.2.
+Tested version of WordPress 6.8.1, plugin version was WooCommerce Stripe Gateway 9.5.3.
 
 This file is a code snippet that is used for [WooCommerce Stripe Gateway](https://wordpress.org/plugins/woocommerce-gateway-stripe/) plugin.