Updated tests to replace deprecated functions with assert_allclose an…

[0Shadow02]

Pull Request Description

Fixes #3743

Changes Made for mdanalysis/testsuite/MDAnalysisTests/analysis/test_base.py:

• Replaced deprecated assert_almost_equal with assert_allclose.
• Utilized pytest.approx for single float comparisons.
• Enhanced test coverage using pytest.mark.parametrize.
• Verified error handling for ValueError and IndexError.

PR Checklist:

• Issue raised/referenced?
• Tests updated/added?
• Documentation updated/added?
• package/CHANGELOG file updated?
• Is your name in package/AUTHORS?

Developers Certificate of Origin:

I certify that I can submit this code contribution as described in the Developer Certificate of Origin, under the MDAnalysis LICENSE.

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📚 Documentation preview 📚: https://mdanalysis--4979.org.readthedocs.build/en/4979/

[github-actions]

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 93.41%. Comparing base (dcaa087) to head (0a4c2dd).

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #4979      +/-   ##
===========================================
- Coverage    93.42%   93.41%   -0.02%     
===========================================
  Files          177      189      +12     
  Lines        21859    22925    +1066     
  Branches      3078     3078              
===========================================
+ Hits         20422    21415     +993     
- Misses         986     1059      +73     
  Partials       451      451              

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