ci: Add renovate CI job for updating mender-artifact version

[vpodzime]

Ticket: QA-1507
Changelog: none

[mender-test-bot]

@vpodzime, start a full integration test pipeline with:

• mentioning me and start integration pipeline

---

my commands and options

You can prevent me from automatically starting CI pipelines:

• if your pull request title starts with "[NoCI] ..."

You can trigger a client pipeline on multiple prs with:

• mentioning me and start client pipeline --pr mender/127 --pr mender-connect/255

You can trigger GitHub->GitLab branch sync with:

• mentioning me and sync

You can print PR statistics for a repository with:

• mentioning me and print fast pr stats (Team stats only)
• mentioning me and print full pr stats (Detailed report)
• options: --repo <repo>, --team <name>, --all-repos, --exclude-drafts, --exclude-user <user>
• mentioning me and print full pr stats --repo mender --all-repos --exclude-drafts

You can cherry pick to a given branch or branches with:

• mentioning me and:

 cherry-pick to:
 * 1.0.x
 * 2.0.x

[michalkopczan]

Do we have some places where we want to use an older version of mender-artifact? Asking just to know if there's things we should decline from future renovate bot PRs

[danielskinstad]

Looks good to me

[vpodzime]

Asking just to know if there's things we should decline from future renovate bot PRs

I'm not aware of any at this moment. But it can easily happen if we introduce something disruptive (like new big dependencies) or if some place actually wants to test things with an older version.

[oldgiova]

Nitpicks on my end, no blockers