Bump benchmark from 0.4.14 to 0.4.15 (#370)

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"