Update publish time in monthly template
What does this MR do and why?
To help with the package server overload during security releases, the concurrency of the publish jobs was limited on omnibus-gitlab!6231 (merged). That soften the problem during the security release at the cost of making the publishing of the monthly release slower, e.g. one job is processed at a time.
This was noticed during the publishing of the 15.4 packages, it took a bit more than an hour for the packages to be completely published which delayed the publication of the blog post. Slack convo for reference
This commit aims to solve that situation by starting the publishing phase 20 minutes earlier
Author Check-list
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Has documentation been updated?
Edited by Mayra Cabrera