Add django 5.0a1 to test matrix

[jrobichaud]

closes #349

[codecov]

Codecov Report

All modified lines are covered by tests ✅

Comparison is base (5dba808) 100.00% compared to head (1cc57f6) 100.00%.

❗ Current head 1cc57f6 differs from pull request most recent head 4d7975b. Consider uploading reports for the commit 4d7975b to get more accurate results

Additional details and impacted files

@@            Coverage Diff            @@
##              main      #350   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files           32        32           
  Lines          459       459           
  Branches        23        23           
=========================================
  Hits           459       459           

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