chore: Updated the version of Amazon.CDK.Lib to 2.231.0

[ashishdhingra]

Issue #, if available: D351930255

Description of changes:
Update the version of Amazon.CDK.Lib that is referenced by the recipe CDK projects.

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 62.15%. Comparing base (9fd214c) to head (d413c9d).
⚠️ Report is 2 commits behind head on dev.

Additional details and impacted files

@@           Coverage Diff           @@
##              dev     #986   +/-   ##
=======================================
  Coverage   62.15%   62.15%           
=======================================
  Files         294      294           
  Lines       10813    10813           
  Branches     1615     1615           
=======================================
  Hits         6721     6721           
  Misses       3491     3491           
  Partials      601      601           

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