Update Python version to 3.11 and requirements for documentation build

[338rajesh]

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[codecov-commenter]

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Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 76.62%. Comparing base (58f5cc6) to head (da67cc4).
⚠️ Report is 4 commits behind head on main.
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Additional details and impacted files

@@           Coverage Diff           @@
##             main      #25   +/-   ##
=======================================
  Coverage   76.62%   76.62%           
=======================================
  Files           6        6           
  Lines         907      907           
=======================================
  Hits          695      695           
  Misses        212      212           

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