Add the casper package instead of the lupin-casper package as the installer for Windows is a project that is no longer supported and lupin is being removed the archive in LP: 1960457.

debian/changelog

@@ -1,3 +1,11 @@
+livecd-rootfs (2.755) UNRELEASED; urgency=medium
+
+  * Add the casper package instead of the lupin-casper package as the
+    installer for Windows is a project that is no longer supported and lupin
+    is being removed the archive in LP: 1960457.
+
+ -- Brian Murray <brian@ubuntu.com>  Wed, 09 Feb 2022 15:37:23 -0800
+
 livecd-rootfs (2.754) jammy; urgency=medium
 
   * Disable APT periodic update for OCI/docker images when cron-like

live-build/auto/config

@@ -548,11 +548,11 @@ case $IMAGEFORMAT in
 				;;
 			ubuntu)
 				if [ "$SUBPROJECT" != "canary" ]; then
-					add_package live lupin-casper
+					add_package live casper
 				fi
 				;;
 			*)
-				add_package live lupin-casper
+				add_package live casper
 				;;
 		esac
 		;;
@@ -840,7 +840,7 @@ case $PROJECT in
 				snap_from_seed server config/package-lists/livecd-rootfs.snaplist.chroot_ubuntu-server-minimal.ubuntu-server.full
 				add_package ubuntu-server-minimal.ubuntu-server cloud-init
 
-				add_package ubuntu-server-minimal.ubuntu-server.installer linux-firmware lupin-casper openssh-server
+				add_package ubuntu-server-minimal.ubuntu-server.installer linux-firmware casper openssh-server
 				add_snap ubuntu-server-minimal.ubuntu-server.installer subiquity/classic
 				if [ $ARCH = s390x ]; then
 					add_package ubuntu-server-minimal.ubuntu-server.installer s390-tools-zkey