adding getdate fn and using it to always have correct copyright date

Author: Philip Halsall

src/theme/Footer/index.tsx

@@ -15,6 +15,12 @@ import WeChatLogo from '@site/static/svg/socials/wechat_24x24.svg';
 import YoutubeLogo from '@site/static/svg/socials/youtube_24x24.svg';
 import { FormSubmitUrl } from '@site/src/constants';
 
+function getCurrentYear(){
+  const today = new Date();
+  const year = today.getFullYear();
+  return year;
+}
+
 function Footer(): JSX.Element | null {
   const [email, setEmail] = React.useState('');
   const [isSubmitted, setIsSubmitted] = React.useState(false);
@@ -230,7 +236,7 @@ function Footer(): JSX.Element | null {
           </ul>
         </div>
         <div className={styles.minaFooter_legals__info}>
-          ©2023 Mina Foundation. All rights reserved.
+          ©{getCurrentYear()} Mina Foundation. All rights reserved.
         </div>
       </div>
     </footer>