[CHORE] Exclude JSON pre-commit fixer for ipynb files

[jaychia]

For some reason this is only happening in CI but not locally, breaking our CI builds.

Let's disable this since ipynb files are not human-readable anyways.

[codecov]

Codecov Report

Merging #1184 (11c687e) into main (6a36160) will not change coverage.
The diff coverage is n/a.

❗ Current head 11c687e differs from pull request most recent head 4919b29. Consider uploading reports for the commit 4919b29 to get more accurate results

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1184   +/-   ##
=======================================
  Coverage   88.43%   88.43%           
=======================================
  Files          54       54           
  Lines        5562     5562           
=======================================
  Hits         4919     4919           
  Misses        643      643