releasing package livecd-rootfs version 23.10.31

debian/changelog

@@ -1,4 +1,4 @@
-livecd-rootfs (23.10.31) UNRELEASED; urgency=medium
+livecd-rootfs (23.10.31) mantic; urgency=medium
 
   * blkid is unreliable in mount_image(), but this blkid call is only here
     for debugging, so ignore any failures (even if we don't understand
@@ -6,7 +6,7 @@ livecd-rootfs (23.10.31) UNRELEASED; urgency=medium
   * mark the minimized autopkgtest as also allowing stderr, in the event of
     any error messages from blkid.
 
- -- Steve Langasek <steve.langasek@ubuntu.com>  Tue, 05 Sep 2023 12:29:24 -0700
+ -- Steve Langasek <steve.langasek@ubuntu.com>  Tue, 05 Sep 2023 14:42:03 -0700
 
 livecd-rootfs (23.10.30) mantic; urgency=medium