Upgrade iocage to py38

tor2jail

@@ -117,7 +117,7 @@ done
 
 # preparing system
 if [ "$PREPARE" = true ]; then
-  pkg update -f && pkg install -y py37-iocage nyx coreutils
+  pkg update -f && pkg install -y py38-iocage nyx coreutils
   echo 'fdescfs /dev/fd  fdescfs  rw  0  0' >> /etc/fstab
 
   # preparing local_unbound