Artifacts of A Build API does not return dot files

Artifacts Of A Build API does not return dot files.
For example, I store simple-cov result files as artifacts (capture is following)
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Artifacts API returns some artifact file information in response body. But, .last_run.json and .resultset.json are not included.

I have a workaround which is rename dot files such as .resultset.json to resultset.json. But I think this is not smart way.