Update dependency com.squareup.okio:okio to v3.15.0 (#1970)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

gradle/libs.versions.toml

@@ -29,7 +29,7 @@ kotlinpoet = { module = "com.squareup:kotlinpoet", version.ref = "kotlinpoet" }
 kotlinpoet-ksp = { module = "com.squareup:kotlinpoet-ksp", version.ref = "kotlinpoet" }
 ksp = { module = "com.google.devtools.ksp:symbol-processing", version.ref = "ksp" }
 ksp-api = { module = "com.google.devtools.ksp:symbol-processing-api", version.ref = "ksp" }
-okio = "com.squareup.okio:okio:3.14.0"
+okio = "com.squareup.okio:okio:3.15.0"
 assertj = "org.assertj:assertj-core:3.27.3"
 junit = "junit:junit:4.13.2"
 kotlinCompileTesting = { module = "dev.zacsweers.kctfork:core", version.ref = "kotlinCompileTesting" }