Update pydantic to 2.0b1

[hramezani]

Also, Fixes #19

[codecov-commenter]

Codecov Report

Patch coverage has no change and project coverage change: +0.65 🎉

Comparison is base (56ba90a) 94.77% compared to head (efe38bd) 95.42%.

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Additional details and impacted files

@@            Coverage Diff             @@
##             main      #64      +/-   ##
==========================================
+ Coverage   94.77%   95.42%   +0.65%     
==========================================
  Files           5        5              
  Lines         306      306              
  Branches       70       70              
==========================================
+ Hits          290      292       +2     
+ Misses         13       12       -1     
+ Partials        3        2       -1     

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

... and 1 file with indirect coverage changes

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[hramezani]

please review