fix(deps): update dependency com.squareup.okio:okio-bom to v3.15.0

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
com.squareup.okio:okio-bom	3.13.0 -> 3.15.0

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Warning

Some dependencies could not be looked up. Check the Dependency Dashboard for more information.

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Release Notes

square/okio (com.squareup.okio:okio-bom)

v3.15.0

2025-07-01

• Upgrade: [kotlinx-datetime 0.7.0-0.6.x-compat][datetime_0_7_0_compat]. The previous 3.14.0
  release, FakeFileSystem broke binary-compatibility for calls to FakeFileSystem(). This
  restores that compatibility.

• Breaking: Change FakeFileSystem.clock from a JVM field to a property. This avoids a crash
  running Okio in a Gradle 8.x plugin. This change is not binary-compatible.

v3.14.0

2025-06-28

• Upgrade: [kotlinx-datetime 0.7.0][datetime_0_7_0]. This impacts the okio-fakefilesystem
  artifact only. This is a binary-incompatible backwards-incompatible change that cannot co-exist
  with previous releases of okio-fakefilesystem! If you observe a NoSuchMethodError calling
  FakeFileSystem.init, update the calling code to this release (or newer) and recompile. We don't
  like imposing backwards-incompatible changes like this on you and do so regretfully.

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 89.82%. Comparing base (0309b30) to head (292f2ae).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff            @@
##               main    #7455   +/-   ##
=========================================
  Coverage     89.82%   89.82%           
  Complexity     6998     6998           
=========================================
  Files           798      798           
  Lines         21199    21199           
  Branches       2055     2055           
=========================================
  Hits          19041    19041           
  Misses         1496     1496           
  Partials        662      662           

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