package/apache: security bump version to 2.4.56

Release notes:
https://lists.apache.org/thread/89vkczkfkdyz65d5q59pcyzrn5ts60s6

Changelog: https://dlcdn.apache.org/httpd/CHANGES_2.4.56

Fixes CVE-2023-25690 & CVE-2023-27522:
https://httpd.apache.org/security/vulnerabilities_24.html



Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>
Signed-off-by: Arnout Vandecappelle <arnout@mind.be>