Skip old(er) manifests in CI

[dblock]

Is your feature request related to a problem? Please describe

We have 30+ manifests running CI checks in #1331. That takes more and more time and is not scalable long term even with infinite parallelization.

Describe the solution you'd like

Skip some manifest checks. One idea could be to skip the last patch release, e.g. skip 1.1.0, 1.1.1, 1.1.2 when we have 1.1.3 for example. Another could be to commit release .lock files and check for changes.

Describe alternatives you've considered

No response

Additional context

No response

[zelinh]

[Triage] Adding this issue to our product backlog. We have enough information on this.