update version to 202405290611

The version hasn't been updated in four years, blocking NonGNU ELPA
from building newer releases with changes such as 9443cea.

The timestamp was taken from commit cbdabb9.

d-mode.el

@@ -7,7 +7,7 @@
 ;; Maintainer:  Russel Winder <russel@winder.org.uk>
 ;;              Vladimir Panteleev <vladimir@thecybershadow.net>
 ;; Created:  March 2007
-;; Version:  202003130913
+;; Version:  202405290611
 ;; Keywords:  D programming language emacs cc-mode
 ;; Package-Requires: ((emacs "25.1"))