🔒 Added SRI integrity attribute for Font Awesome CDN (CodeRabbit fix)

Author: DiyaMenon

kidcode-web/src/main/resources/static/index.html

@@ -8,7 +8,9 @@
     <link
     rel="stylesheet"
     href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.5.0/css/all.min.css"
+    integrity="sha512-6UkeuJ+JSTasDIXhVFMz+yTQq5j0KiG2Zs0hV3uOJwMsqZs1XUy3JvRlq9s6C1q8PBA0qL/jY1TRf9bA2wD9kg=="
     crossorigin="anonymous"
+    referrerpolicy="no-referrer"
     />
     <!-- MONACO: Link to the Monaco loader script -->
     <script src="https://cdn.jsdelivr.net/npm/monaco-editor@0.34.1/min/vs/loader.js"></script>