Revert "pardus: upgrade to yirmiuc"

This reverts commit f42987d.

mmdebstrap failure:

The following packages have unmet dependencies:
 base-files : PreDepends: awk but it is not installable
E: Unable to correct problems, you have held broken packages.
E: apt-get --yes -oApt::Get::Download-Only=true install ?narrow(?or(?archive(^yirmiuc$),?codename(^yirmiuc$)),?architecture(arm64),?essential) -oAPT::Status-Fd=<$fd> -oDpkg::Use-Pty=false failed
W: listening on child socket failed:
I: removing tempdir /tmp/mmdebstrap.zNNJ2y8UAR...
E: mmdebstrap failed to run

cancelling update.

distro-build/pardus.sh

@@ -1,5 +1,5 @@
 dist_name="Pardus"
-dist_version="yirmiuc"
+dist_version="yirmibir"
 
 bootstrap_distribution() {
 	for arch in arm64 i386 amd64; do