task: Close previous PRs for the same component

[ntnn]

Overview

platform-mesh/helm-charts#2227

Sometimes multiple versions of a component get tagged in succession, e.g. when the e2e CI fails and adjustments must be made.
The workflow responsible for this is just fire-and-forgetting the PRs:
https://github.com/platform-mesh/helm-charts/blob/main/.github/workflows/update-chart-parameters.yaml

Ideally it would also list older PRs for the same component and close them.

Implementation Details

No response

Completion Checklist

• Code implemented and tested
• Documentation updated
• Changes reviewed