ci: bump Lua to 5.4.8

Author: zhaozg

.github/shell/setup_lua.sh

@@ -62,8 +62,8 @@ else
     curl https://www.lua.org/ftp/lua-5.3.6.tar.gz | tar xz
     cd lua-5.3.6
   elif [ "$LUA" == "lua5.4" ]; then
-    curl https://www.lua.org/ftp/lua-5.4.7.tar.gz | tar xz
-    cd lua-5.4.7
+    curl https://www.lua.org/ftp/lua-5.4.8.tar.gz | tar xz
+    cd lua-5.4.8
   fi
 
   if [ "$PLATFORM" == "linux" ]; then