Ensure 404 Not Found is returned for Helm provenance file
What does this MR do and why?
When artifacthub checks an Helm chart, it tries to download the provenance file, and if the provenance file is not correct, it returns: error checking provenance file: invalid provenance file (package: keycloak-operator-legacy version: 0.1.3)
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This MR ensures that getting the provenance file returns 404 Not Found.
Screenshots or screen recordings
Here is the artifacthub error :