update version number

Author: skywind3000

z.lua

@@ -4,7 +4,7 @@
 -- z.lua - a cd command that learns, by skywind 2018-2022
 -- Licensed under MIT license.
 --
--- Version 1.8.22, Last Modified: 2025/05/17 13:54:38
+-- Version 1.8.23, Last Modified: 2025/05/18 00:18:20
 --
 -- * 10x faster than fasd and autojump, 3x faster than z.sh
 -- * available for posix shells: bash, zsh, sh, ash, dash, busybox