Add renovate support

What does this MR do?

Makes the docker images versions have a single source of truth. These versions are marked to be checked by renovate to be updated. MRs will be created if new versions are found weekly.

The renovate config contains the regex that matches the # renovate directive.

Make sure to read about regex managers https://docs.renovatebot.com/modules/manager/regex/

Why was this MR needed?

What's the best way to test this MR?

What are the relevant issue numbers?