Auto closing opened MR if dependency are no longer obsolete

Hello,

I'm using a self-hosted version (using the multi service docker-compose) of dependabot and it's working like a charm.
Thank you for your work!

Now I just noticed the following..
Assuming I have a project with many minor dependencies to be updated.
It correctly opens those many MR.

Now if I update locally all of them and push the changes, I'm expecting that after some point the MR will be closed since they are no longer relevant.

Steps I did:

• I did a toy project (using elixir mix) having both Gitlab (self-hosted) and Github as remotes, using the exact same dependabot.yml.
• When I pushed the project initially with obsolete packages, dependabot correctly opened the same amount of MR/PR.
• I updated the packages locally and pushed the changes.
• The PRs were auto closed on Github.
• The MR are still open (even after a day and after triggering manually in the web interface) on my Gitlab.

So I wonder if it's a problem on my side that I misconfigured something?

Thank you.