feat: update sticky footer aria-label

Author: coseeian

src/components/Banner/index.astro

@@ -5,7 +5,7 @@ const { Content } = await entry.render();
 const { link, title } = entry.data;
 ---
 
-<footer class="banner bg-accent-color text-accent-type-color" style={{ display: 'none' }} data-title={title} aria-label={title}>
+<footer class="banner bg-accent-color text-accent-type-color" style={{ display: 'none' }} data-title={title} aria-label="sticky">
   <a class="banner-content" href={link} target="_blank">
     <Content />
   </a>