Update slf4j monorepo to v2.0.15

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
org.slf4j:jul-to-slf4j (source, changelog)	2.0.13 -> 2.0.15
org.slf4j:slf4j-simple (source, changelog)	2.0.13 -> 2.0.15

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 90.20%. Comparing base (04a2b0a) to head (f44921f).

Additional details and impacted files

@@            Coverage Diff            @@
##               main    #6622   +/-   ##
=========================================
  Coverage     90.20%   90.20%           
  Complexity     6281     6281           
=========================================
  Files           697      697           
  Lines         18903    18903           
  Branches       1852     1852           
=========================================
  Hits          17051    17051           
  Misses         1281     1281           
  Partials        571      571           

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