DOC: Update copyright information

src/core/js/ext_cosmetics.js

 /*
  * This file is a part of the CaosDB Project.
  *
- * Copyright (C) 2021 IndiScale GmbH <info@indiscale.com>
+ * Copyright (C) 2021-2023 IndiScale GmbH <info@indiscale.com>
  * Copyright (C) 2021 Timm Fitschen <t.fitschen@indiscale.com>
+ * Copyright (C) 2023 Florian Spreckelsen <f.spreckelsen@indiscale.com>
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU Affero General Public License as
@@ -80,4 +81,4 @@ var cosmetics = new function () {
 
 $(document).ready(function () {
     caosdb_modules.register(cosmetics);
-});
\ No newline at end of file
+});