Prepare for 2.0a4 release

[hramezani]

No description provided.

[codecov-commenter]

Codecov Report

Patch coverage: 100.00% and no project coverage change.

Comparison is base (4d0a83e) 95.37% compared to head (a9c0561) 95.37%.

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Additional details and impacted files

@@           Coverage Diff           @@
##             main      #47   +/-   ##
=======================================
  Coverage   95.37%   95.37%           
=======================================
  Files           5        5           
  Lines         303      303           
  Branches       78       78           
=======================================
  Hits          289      289           
  Misses         12       12           
  Partials        2        2           

Impacted Files	Coverage Δ
pydantic_settings/version.py	100.00% <100.00%> (ø)

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