Update footer (C) date 2022 -> 2024.

Signed-off-by: Tomasz 'CeDeROM' CEDRO <tomek@cedro.info>

Author: cederom

_includes/themes/apache/footer.html

@@ -7,7 +7,7 @@
                                                       alt="Apache Software Foundation, Est. 1999"/></a>
                 </div>
                 <div>
-                    Copyright &copy; 2019-2022 <a href="https://www.apache.org">The Apache Software Foundation</a>.
+                    Copyright &copy; 2019-2024 <a href="https://www.apache.org">The Apache Software Foundation</a>.
                     Licensed under the <a href="https://www.apache.org/licenses/LICENSE-2.0">Apache License, Version
                     2.0</a>.
                     <br>