Update kotlin monorepo to v2.4.0-RC (#2021)

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

Author: renovate[bot]

gradle/libs.versions.toml

@@ -1,6 +1,6 @@
 [versions]
 minGradle = "9.1.0"
-kotlin = "2.4.0-Beta2"
+kotlin = "2.4.0-RC"
 moshi = "1.15.2"
 pluginPublish = "2.1.1"