Update kotlin monorepo to v1.9.25

| datasource | package                                                                             | from   | to     |
| ---------- | ----------------------------------------------------------------------------------- | ------ | ------ |
| maven      | org.jetbrains.kotlin.multiplatform:org.jetbrains.kotlin.multiplatform.gradle.plugin | 1.8.21 | 1.9.25 |
| maven      | org.jetbrains.kotlin.jvm:org.jetbrains.kotlin.jvm.gradle.plugin                     | 1.8.21 | 1.9.25 |
| maven      | org.jetbrains.kotlin:kotlin-stdlib-jdk8                                             | 1.8.21 | 1.9.25 |
| maven      | org.jetbrains.kotlin:kotlin-stdlib-common                                           | 1.8.21 | 1.9.25 |

Author: renovate[bot]

gradle/projects.libs.versions.toml

@@ -6,7 +6,7 @@ classgraph = "4.8.157"
 dokka = "1.8.10"
 junit = "5.9.2"
 junitLauncher = "1.9.2"
-kotlin = "1.8.21"
+kotlin = "1.9.25"
 kotest = "5.6.1"
 javaSmt = "3.14.3"
 javaCompileTesting = "0.21.0"