Update to support up to 1.20.4

Author: OOP-778

html/startPage/index.html

@@ -25,6 +25,9 @@ <h1 class='title'>pakkit</h1>
         <li class="form-row">
             <label for="version">Version:</label>
             <select id="version">
+                <option value="1.20.4">1.20.4</option>
+                <option value="1.20.3">1.20.3</option>
+                <option value="1.20.2">1.20.2</option>
                 <option value="1.20.1">1.20.1</option>
                 <option value="1.20">1.20</option>
                 <option value="1.19.4">1.19.4</option>