feat(updatecli): Track UBI9 version

[gounthar]

After @lemeurherve's work on the updatecli manifest to keep UBI9 updated in the docker bake file and Dockerfile, it became clear something wasn't working as expected when trying to find the latest version of the UBI9 container with the default updatecli behavior.

I then took Hervé's manifest and transitioned it into using a shell script to find the "right" version.
I discovered a Swagger description that led me to the correct API endpoint.
This endpoint allowed me to query the ubi9 containers, sorted by the last update date and filtered by the latest tag.
As a result, I obtained the version 9.4-1214.1726694543.

The script works as is but would need some additional refinement to return a list of versions rather than just the most recent one.

This could help partially solve #883.

Testing Done

I updated my local configuration to target my fork instead of upstream.
To test the changes, I intentionally kept my master branch out-of-date, and updatecli successfully created this PR for me.

The command used for testing:
updatecli diff --debug --config ./updatecli/updatecli.d/rhel-ubi9.yaml --values ./updatecli/values.github-action.yaml 2>&1

Submitter checklist

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• Ensure that the pull request title represents the desired changelog entry
• Please describe what you did
• Link to relevant issues in GitHub or Jira
• Link to relevant pull requests, esp. upstream and downstream changes
• Ensure you have provided tests - that demonstrates feature works or fixes the issue

[timja]

this seems a bit over complicated, does renovate or dependabot do this correctly and simpler?

[gounthar]

I think dependabot handles the version retrieval pretty well, but I'm not sure it can update the docker bake file.

[timja]

I think dependabot handles the version retrieval pretty well, but I'm not sure it can update the docker bake file.

renovate would be able to with the regex method pretty easily then in the bake file

[dduportal]

Please note that this "issue" should be temporarily and updatecli should be fixed