refactor: copyright 하드코딩으로 변경

Author: devwqc

src/components/Footer.astro

@@ -1,11 +1,9 @@
 ---
 import SnsIcon from './SnsIcon.astro';
-
-const today = new Date();
 ---
 
 <footer class="flex flex-col items-center gap-1 py-10">
-  &copy; {today.getFullYear()} devwqc All rights reserved.
+  &copy; 2024 devwqc All rights reserved.
   <ul class="flex gap-5">
     <li>
       <SnsIcon