Changing s3 authentication to use anon bucket

[varsiha-sothilingam]

Description

Closes #issue_number

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Checklist

• This pull request has a descriptive title and labels
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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 93.13%. Comparing base (77f0571) to head (ea2525d).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #337   +/-   ##
=======================================
  Coverage   93.13%   93.13%           
=======================================
  Files           7        7           
  Lines         685      685           
=======================================
  Hits          638      638           
  Misses         47       47           

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[valeriupredoi]

thanks @varsiha-sothilingam - could you please change the ones in tests/test_real_s3_with_axes.py too, and one in tests/test_real_s3.py - I reckon best we kept one, but the one in tests/test_real_s3.py::test_s3_small_file can prob be replaced 🍺

[varsiha-sothilingam]

Hi @valeriupredoi Thanks for following up the PR. I have updated the relevant files now. Once tests have passed I will merge it into main if you are also happy with it. Cheers

[valeriupredoi]

LGTM many thanks @varsiha-sothilingam