Use new published version of 000027 in tests

[jwodder]

Closes #261.

[codecov]

Codecov Report

Merging #763 (cd2a269) into master (3341f98) will decrease coverage by 0.69%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master     #763      +/-   ##
==========================================
- Coverage   84.83%   84.13%   -0.70%     
==========================================
  Files          59       59              
  Lines        6027     6027              
==========================================
- Hits         5113     5071      -42     
- Misses        914      956      +42     

Flag	Coverage Δ
unittests	84.13% <100.00%> (-0.70%)	⬇️

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Impacted Files	Coverage Δ
dandi/tests/test_download.py	100.00% <100.00%> (ø)
dandi/cli/tests/test_download.py	63.63% <0.00%> (-36.37%)	⬇️
dandi/cli/cmd_download.py	69.23% <0.00%> (-28.85%)	⬇️
dandi/cli/base.py	92.10% <0.00%> (-5.27%)	⬇️
dandi/dandiset.py	82.89% <0.00%> (-1.32%)	⬇️

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[yarikoptic]

Thank you! Failing test is 400 from redirect, #762 yet to be merged