Print to `STDERR` so that this doesn't end up in rollback script when redirecting to file.

[Robert Marciniak]

yabsnap/src/code/main.py

Lines 137 to 143 in deb4d2e

 print('\n'.join([ 
     '', 
     '*** NOTE - Backup schedule exists but yabsnap.timer is not active ***', 
     'To enable scheduled backups, please run -', 
     '  sudo systemctl enable --now yabsnap.timer', 
     '', 
 ])) 

[Nomen Aliud]

Thanks, this should be fixed in v1.07.1.