move openmm test data from figshare to zenodo

[atravitz]

because download fails from figshare keep breaking the CI

Checklist

• Added a news entry

Developers certificate of origin

• I certify that this contribution is covered by the MIT License here and the Developer Certificate of Origin at https://developercertificate.org/.

[github-actions]

No API break detected ✅

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 92.74%. Comparing base (148af26) to head (dc32aa9).
⚠️ Report is 277 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1270      +/-   ##
==========================================
- Coverage   94.34%   92.74%   -1.61%     
==========================================
  Files         141      141              
  Lines       10855    10855              
==========================================
- Hits        10241    10067     -174     
- Misses        614      788     +174     

Flag	Coverage Δ
fast-tests	92.74% <ø> (?)
slow-tests	?

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[IAlibay]

thanks so much!