Add test_releases.yml workflow to test different install options for latest release (github; pypi; conda)

[aleaf]

• in test.yaml: test against latest flopy on all windows runs.
• bump supported python versions to 3.13-3.11

[codecov-commenter]

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Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 89.48%. Comparing base (ceba889) to head (1a9e5dd).
Report is 6 commits behind head on develop.

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Additional details and impacted files

@@             Coverage Diff             @@
##           develop     #114      +/-   ##
===========================================
- Coverage    89.53%   89.48%   -0.05%     
===========================================
  Files           65       67       +2     
  Lines        13125    13139      +14     
===========================================
+ Hits         11752    11758       +6     
- Misses        1373     1381       +8     

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