.gitlab-ci.yml, 백업서버변경(245 -> 250)

3 jobs for master in 2 minutes and 14 seconds (queued for 1 second)
Status Job ID Name Coverage
  Deploy
passed #21411
tb2
tb2

00:00:46

passed #21412
tb3
tb3

00:01:44

 
  Backup
passed #21413
backup-new
backup

00:00:29