Update dependency cfn-lint to v1.15.1

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
cfn-lint (changelog)	1.13.0 -> 1.15.1

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Release Notes

aws-cloudformation/cfn-lint (cfn-lint)

v1.15.1

Compare Source

v1.15.1

v1.15.0

Compare Source

v1.15.0

v1.14.2

Compare Source

v1.14.2

v1.14.1

Compare Source

v1.14.1

v1.14.0

Compare Source

v1.14.0

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Configuration

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 90.19%. Comparing base (8411237) to head (1a55be2).
Report is 1 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2595      +/-   ##
==========================================
- Coverage   90.20%   90.19%   -0.01%     
==========================================
  Files         256      256              
  Lines       15690    15690              
==========================================
- Hits        14153    14152       -1     
- Misses       1537     1538       +1     

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