Update kotlin monorepo to v2

| datasource | package                                                                             | from   | to    |
| ---------- | ----------------------------------------------------------------------------------- | ------ | ----- |
| maven      | org.jetbrains.kotlin.multiplatform:org.jetbrains.kotlin.multiplatform.gradle.plugin | 1.9.21 | 2.0.0 |
| maven      | org.jetbrains.kotlin.jvm:org.jetbrains.kotlin.jvm.gradle.plugin                     | 1.9.21 | 2.0.0 |
| maven      | org.jetbrains.kotlin:kotlin-stdlib-jdk8                                             | 1.9.21 | 2.0.0 |
| maven      | org.jetbrains.kotlin:kotlin-stdlib-common                                           | 1.9.21 | 2.0.0 |

Author: renovate[bot]

gradle/projects.libs.versions.toml

@@ -7,7 +7,7 @@ dokka = "1.8.10"
 intellijOpenApi = "7.0.3"
 javaAssist = "3.29.2-GA"
 junit = "5.9.2"
-kotlin = "1.9.21"
+kotlin = "2.0.0"
 kotlinCompileTesting = "0.4.0"
 javaCompileTesting = "0.21.0"
 kotlinBinaryCompatibilityValidator = "0.13.0"