bump version to dev after release

plugins/woocommerce-blocks/package-lock.json

@@ -1,6 +1,6 @@
 {
 	"name": "@woocommerce/block-library",
-	"version": "3.9.0-dev",
+	"version": "4.0.0-dev",
 	"lockfileVersion": 1,
 	"requires": true,
 	"dependencies": {

plugins/woocommerce-blocks/package.json

@@ -2,7 +2,7 @@
 	"name": "@woocommerce/block-library",
 	"title": "WooCommerce Blocks",
 	"author": "Automattic",
-	"version": "3.9.0",
+	"version": "4.0.0-dev",
 	"description": "WooCommerce blocks for the Gutenberg editor.",
 	"homepage": "https://github.com/woocommerce/woocommerce-gutenberg-products-block/",
 	"keywords": [

plugins/woocommerce-blocks/readme.txt

@@ -4,7 +4,7 @@ Tags: gutenberg, woocommerce, woo commerce, products, blocks, woocommerce blocks
 Requires at least: 5.3
 Tested up to: 5.6
 Requires PHP: 7.0
-Stable tag: 3.9.0
+Stable tag: 4.0.0-dev
 License: GPLv3
 License URI: https://www.gnu.org/licenses/gpl-3.0.html
 

plugins/woocommerce-blocks/src/Package.php

@@ -106,7 +106,7 @@ class Package {
 				NewPackage::class,
 				function ( $container ) {
 					// leave for automated version bumping.
-					$version = '3.9.0';
+					$version = '4.0.0-dev';
 					return new NewPackage(
 						$version,
 						dirname( __DIR__ ),

plugins/woocommerce-blocks/woocommerce-gutenberg-products-block.php

@@ -3,7 +3,7 @@
  * Plugin Name: WooCommerce Blocks
  * Plugin URI: https://github.com/woocommerce/woocommerce-gutenberg-products-block
  * Description: WooCommerce blocks for the Gutenberg editor.
- * Version: 3.9.0
+ * Version: 4.0.0-dev
  * Author: Automattic
  * Author URI: https://woocommerce.com
  * Text Domain:  woo-gutenberg-products-block