feat(footer): use dynamic year variable

Author: danielcristho

_layouts/_includes/footer.html

@@ -28,7 +28,7 @@ <h3>Contact Us</h3>
       </div>
     </div>
     <div class="footer-bottom">
-      <small>&copy; 2025 Black Python Devs</small>
+      <small>&copy; {{ year }} Black Python Devs</small>
     </div>
   </div>
 </footer>