[testing] Swaps out path for xarray anon s3 test

[norlandrhagen]

• [x] Tests added
• [ ] Tests passing

[codecov[bot]]

Codecov Report

:white_check_mark: All modified and coverable lines are covered by tests. :white_check_mark: Project coverage is 87.55%. Comparing base (8230c36) to head (51b54d3).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #735   +/-   ##
=======================================
  Coverage   87.55%   87.55%           
=======================================
  Files          35       35           
  Lines        1848     1848           
=======================================
  Hits         1618     1618           
  Misses        230      230           

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[TomNicholas]

Is the slow-test actually being run in the CI?

[norlandrhagen]

Two test failures seem to be unrelated and also happening here: https://github.com/zarr-developers/VirtualiZarr/actions/runs/16819018680/job/47642147440

[TomNicholas]

Yeah 😕 - I raised #761 to track that.

For this PR - how big is that file the test is now pointing to?

[norlandrhagen]

Thanks!

Looks like ~283KB

[maxrjones]

If we really want to avoid network usage even for small files, we could use minio to test anon s3 access.