add automatic copyright year

config.yml

@@ -27,8 +27,7 @@ params:
     - media/zeichnung.webp
   impressumURL: pages/impressum
   dseURL: pages/datenschutz
-  copyright: "Copyright © 2023 Georg-Cantor-Gymnasium Halle (Saale). Made
-    with :heart: and [Hugo](https://gohugo.io)."
+  copyright: 'Georg-Cantor-Gymnasium Halle (Saale). Made with :heart: and [Hugo](https://gohugo.io).'
   plugins:
     css:
       - https://assets.cantorgymnasium.de/bootstrap/v5/css/bootstrap.min.css

layouts/partials/footer.html

@@ -49,7 +49,7 @@
     <div class="container">
       <div class="row">
         <div class="col-sm-7 text-sm-start text-center">
-          <p class="mb-0 text-white text-opacity-50">{{ .Site.Params.copyright | markdownify | emojify }}</p>
+          <p class="mb-0 text-white text-opacity-50">Copyright &copy; {{ time.Format "2006" now }} {{ .Site.Params.copyright | markdownify | emojify }}</p>
         </div>
         <div class="col-sm-5 text-sm-end text-center">
           <ul class="list-inline">