move version 4 notice in changelog

readme.txt

@@ -145,13 +145,13 @@ Please create a new GitHub issue and let us know: [https://github.com/liip/boots
 
 = 4.3.1 =
 
+**NOTICE:** Version 4.x of the plugin will be the last version to support WordPress versions lower than 5.3.
+If you're on a lower version of WordPress think about updating it if you still would like receive updates for this plugin.
+
 * [FIX] Apply default color to button if `color` attribute is missing in `styleOptions`.
 
 = 4.3.0 =
 
-**NOTICE:** Version 4.x of the plugin will be the last version to support WordPress versions lower than 5.3.
-If you're on a lower version of WordPress think about updating it if you still would like receive updates for this plugin.
-
 * [COMPATIBILITY] Tested up to WordPress 6.1.
 * [CHANGE] Set default `style` attribute of the Button block to `primary`. This shouldn't be a breaking change since the template already added the `btn-primary` class if no `style` was selected.
 * [FEATURE] Add `color` attribute to the `styleOptions` to be able to display the buttons in the correct color in the editor. If you have changed the `styleOptions` via the [`wpBootstrapBlocks.button.styleOptions`](https://github.com/liip/bootstrap-blocks-wordpress-plugin#wpbootstrapblocksbuttonstyleoptions) JavaScript filter please add the according colors to your style objects.