Fixed colour contrast

Fixes #64

Author: ajaydsouza

includes/blocks/build/alerts/index.asset.php

@@ -1 +1 @@
-<?php return array('dependencies' => array('react-jsx-runtime', 'wp-block-editor', 'wp-blocks', 'wp-i18n'), 'version' => '7034904210e64b0a502f');
+<?php return array('dependencies' => array('react-jsx-runtime', 'wp-block-editor', 'wp-blocks', 'wp-i18n'), 'version' => 'e4f02cbc6cf576853ca5');