update.sh: drop --release-repo support (gitlab releases cannot have files...

update.sh: drop --release-repo support (gitlab releases cannot have files uploaded through API); add --release-directory instead
3 jobs for master in 15 minutes and 39 seconds (queued for 4 seconds)
Status Job ID Name Coverage
  Test
passed #30083
backend

00:12:30

passed #30084
frontend

00:02:30

passed #30085
stats

00:00:38