[DNM] fix parallel gather test dataset

[atravitz]

resolve #1130

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[atravitz]

I realize it's not good practice to have this notebook in here, but I'd like to keep it for data provenance until I revisit our tests for cleanup.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 91.89%. Comparing base (829ce37) to head (66b4715).
Report is 85 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1136      +/-   ##
==========================================
- Coverage   93.53%   91.89%   -1.64%     
==========================================
  Files         142      142              
  Lines       10635    10635              
==========================================
- Hits         9947     9773     -174     
- Misses        688      862     +174     

Flag	Coverage Δ
fast-tests	91.89% <ø> (?)
slow-tests	?

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[mikemhenry]

So just to confirm:
+40.6 MB (690%) is because we were missing attempt_1 and attempt_2? What if instead of adding this to the repo we used pooch to pull the data down instead? I'd really rather not add 40MBs to our repo if we can help it

[github-actions]

No API break detected ✅

[atravitz]

this will be resolved by #1148