Fix windows pickling issue

[farizrahman4u]

🚀 🚀 Pull Request

Checklist:

• My code follows the style guidelines of this project and the Contributing document
• I have commented my code, particularly in hard-to-understand areas
• I have kept the coverage-rate up
• I have performed a self-review of my own code and resolved any problems
• I have checked to ensure there aren't any other open Pull Requests for the same change
• I have described and made corresponding changes to the relevant documentation
• New and existing unit tests pass locally with my changes

Changes

[CLAassistant]

All committers have signed the CLA.

[codecov]

Codecov Report

Merging #1421 (dd58faf) into main (5662c3a) will increase coverage by 0.00%.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##             main    #1421   +/-   ##
=======================================
  Coverage   92.33%   92.33%           
=======================================
  Files         176      176           
  Lines       14204    14205    +1     
=======================================
+ Hits        13115    13116    +1     
  Misses       1089     1089           

Flag	Coverage Δ
unittests	92.33% <100.00%> (+<0.01%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
hub/core/dataset/dataset.py	93.78% <100.00%> (+0.01%)	⬆️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 5662c3a...dd58faf. Read the comment docs.