[Renovate] Update dependency org.mockito:mockito-core to v5.15.2 (#69)

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

Author: renovate[bot]

buildSrc/src/main/kotlin/Versions.kt

@@ -5,7 +5,7 @@ object Versions {
     const val ADVENTURE_API = "4.18.0"
     const val CDN = "1.14.5"
 
-    const val MOCKITO_CORE = "5.14.2"
+    const val MOCKITO_CORE = "5.15.2"
     const val JUNIT_JUPITER = "5.11.4"
     const val ASSERTJ_CORE = "3.27.1"
     const val AWAITILITY = "4.2.2"