Fix aria attribute

src/components/YouTubeBanner.astro

@@ -6,7 +6,7 @@ import Icon from "./Icon.astro";
     <a href='https://youtube.com/theroadmap?sub_confirmation=1' target='_blank' class='flex bg-yellow-200 text-center flex-1 items-center justify-center text-sm hover:bg-yellow-300 outline-0 '>
         <Icon icon="youtube" /> We now have a YouTube Channel.&nbsp;<span class='hidden sm:inline'>Subscribe for the video content.</span>
     </a>
-    <button class='text-yellow-500 bg-yellow-200 hover:text-yellow-900 hover:bg-yellow-400 outline-0 px-2' onclick='this.parentElement.classList.add("hidden")'>
+    <button class='text-yellow-500 bg-yellow-200 hover:text-yellow-900 hover:bg-yellow-400 outline-0 px-2' onclick='this.parentElement.classList.add("hidden")' aria-label="Close">
         <Icon icon="close" />
     </button>
 </div>