add changelog for ubuntu-core-desktop -> ubuntu-core-installer change

debian/changelog

@@ -1,3 +1,11 @@
+livecd-rootfs (24.10.14) UNRELEASED; urgency=medium
+
+  [ Sergio Costas ]
+  * Switch ubuntu-core-desktop project to be a subproject of the
+    ubuntu-core-installer project.
+
+ -- Michael Hudson-Doyle <michael.hudson@ubuntu.com>  Tue, 10 Sep 2024 16:09:34 +1200
+
 livecd-rootfs (24.10.13) oracular; urgency=medium
 
   * Fix autopkgtest issue where /tmp mounted with nodev is used as a working