Python 3.13 support

[pllim]

Description

This pull request is to

• fix TST: Run filter_par.rst with numpy>=2 #376
• address first 2 items in Python 3.13 support #393

[github-actions]

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• Do the proposed changes actually accomplish desired goals?
• Do the proposed changes follow the STScI coding guidelines?
• Are tests added/updated as required? If so, do they follow the STScI testing guidelines?
• Are docs added/updated as required?
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[github-actions]

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 97.19%. Comparing base (570f216) to head (bc912f7).
Report is 14 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #394      +/-   ##
==========================================
- Coverage   97.21%   97.19%   -0.03%     
==========================================
  Files          17       17              
  Lines        2047     2031      -16     
==========================================
- Hits         1990     1974      -16     
  Misses         57       57              

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