Bump benchmark from 0.4.14 to 0.4.15

Bumps `benchmark` from 0.4.14 to 0.4.15.

Updates `org.jetbrains.kotlinx:kotlinx-benchmark-runtime` from 0.4.14 to 0.4.15
- [Release notes](https://github.com/Kotlin/kotlinx-benchmark/releases)
- [Changelog](https://github.com/Kotlin/kotlinx-benchmark/blob/master/CHANGELOG.md)
- [Commits](Kotlin/kotlinx-benchmark@v0.4.14...v0.4.15)

Updates `org.jetbrains.kotlinx.benchmark` from 0.4.14 to 0.4.15

---
updated-dependencies:
- dependency-name: org.jetbrains.kotlinx:kotlinx-benchmark-runtime
  dependency-version: 0.4.15
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: org.jetbrains.kotlinx.benchmark
  dependency-version: 0.4.15
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

gradle/libs.versions.toml

@@ -4,7 +4,7 @@ kotest = "6.0.4"
 detekt = "1.23.8"
 okio = "3.16.3"
 serialization = "1.9.0"
-benchmark = "0.4.14"
+benchmark = "0.4.15"
 openapi = "2025.5"
 jackson = "2.20.1"