Introduce renovate bot
What does this MR do and why?
Upgrades dependencies (opening MR) on a schedule see https://gitlab.com/gitlab-com/gl-infra/common-ci-tasks/-/blob/main/renovate-bot.md
All the configuration is already in place. We only need to merge it.
Author Check-list
- [-] Has documentation been updated?
Edited by Mayra Cabrera