Update json cache to eliminate race condition

[ubaskota]

Description of changes:
Use os.replace() for atomic file operations to eliminate race conditions during concurrent access to the file cache. This ensures that writes are either fully completed or not applied at all, preventing partial writes that could leave the JSON file in an invalid state when multiple processes access the cache simultaneously.

Tests:
I verified that all tests including the the newly added unit tests pass.

By submitting this pull request, I confirm that you can use, modify, copy, and redistribute this contribution, under the terms of your choice.

[codecov-commenter]

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Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 92.72%. Comparing base (bbed2c0) to head (e81b779).
⚠️ Report is 387 commits behind head on develop.
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Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #3597      +/-   ##
===========================================
- Coverage    93.13%   92.72%   -0.42%     
===========================================
  Files           68       68              
  Lines        15336    15565     +229     
===========================================
+ Hits         14283    14432     +149     
- Misses        1053     1133      +80     

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[SamRemis]

What would be the tradeoffs of making sure the cache key is always unique to avoid this race condition entirely?