Update pytest skip condition for delete_on_close to Python 3.12

[davidlin20dev]

Why are the changes needed?

While developing another feature using Python 3.11.5, I ran make test, which resulted in the following error:

According to the Python Docs, the delete_on_close parameter was introduced in version 3.12.

What changes were proposed in this pull request?

Originally:

@pytest.mark.skipif(
    sys.version_info < (3, 10), reason="handling for windows is nicer with delete_on_close, which doesn't exist in 3.9"
)

After changes:

@pytest.mark.skipif(
    sys.version_info < (3, 12), reason="handling for windows is nicer with delete_on_close, which doesn't exist before 3.12"
)

This change ensures compatibility by updating the condition to skip tests for Python versions earlier than 3.12, where delete_on_close is unavailable.

Setup process

Run make test

Check all the applicable boxes

• I updated the documentation accordingly.
• All new and existing tests passed.
• All commits are signed-off.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 79.33%. Comparing base (39e7227) to head (6c1c179).
Report is 1 commits behind head on master.

Additional details and impacted files

@@             Coverage Diff             @@
##           master    #2939       +/-   ##
===========================================
+ Coverage   51.46%   79.33%   +27.87%     
===========================================
  Files         199      199               
  Lines       20870    20870               
  Branches     2684     2684               
===========================================
+ Hits        10740    16557     +5817     
+ Misses       9528     3565     -5963     
- Partials      602      748      +146     

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