update server requirements

Author: johndoh

about/index.html

@@ -89,8 +89,8 @@ <h3>3<sup>rd</sup> Party Additions</h3>
         <h2 id="serverrequirements">Server Requirements <a class="anchor" href="#serverrequirements" aria-label="Link to this section: Server Requirements"></a></h2>
         <ul>
             <li>Apache, Lighttpd, Nginx, IIS, Cherokee or Hiawatha web server</li>
-            <li>PHP Version 7.3 or greater<sup><a href="#fn1" class="text-body-secondary">1</a></sup></li>
-            <li>MySQL/MariaDB, PostgreSQL, SQLite, MSSQL or Oracle database</li>
+            <li>PHP Version 8.1 or greater<sup><a href="#fn1" class="text-body-secondary">1</a></sup></li>
+            <li>MySQL/MariaDB, PostgreSQL or SQLite database</li>
             <li>SMTP server and IMAP server with IMAP4 rev1 support</li>
         </ul>