Add CloudFormationProvisionedProduct to exceptions

[kylekluever]

Issue #, if available:
fix #3480

Description of changes:

• Skip getatt format validation on AWS::ServiceCatalog::CloudFormationProvisionedProduct

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[kylekluever]

@kddejong - I believe this fixes #3480

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 93.32%. Comparing base (19b13e2) to head (aec7aff).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3481      +/-   ##
==========================================
- Coverage   93.33%   93.32%   -0.01%     
==========================================
  Files         325      325              
  Lines       11082    11082              
  Branches     2324     2324              
==========================================
- Hits        10343    10342       -1     
  Misses        414      414              
- Partials      325      326       +1     

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