chore(gitalyctl, gprd): increase concurrency to 10
What
Increase concurrency for group
, snippets
, and project
from 1 to 0
Why
We want to move repositories at a faster rate, in https://gitlab.com/gitlab-com/gl-infra/production/-/issues/16946#note_1592504444 we've validated that we have enough capacity to do so.
Reference: https://gitlab.com/gitlab-com/gl-infra/production/-/issues/16946