Update kotlin

Author: renovate[bot]

gradle/libs.versions.toml

@@ -8,7 +8,7 @@ androidxAppCompat = "1.7.0"
 androidxArchCore = "2.2.0"
 androidxBrowser = "1.4.0"
 androidxComposeBom = "2024.11.00"
-androidxComposeCompiler = "1.4.3"
+androidxComposeCompiler = "1.5.15"
 androidxCompose = "1.2.0"
 androidxComposeRuntimeTracing = "1.7.5"
 androidxCore = "1.15.0"
@@ -40,7 +40,7 @@ jacoco = "0.8.7"
 junit4 = "4.13.2"
 kotlin = "2.1.0"
 kotlinxCoroutines = "1.9.0"
-kotlinxDatetime = "0.4.0"
+kotlinxDatetime = "0.6.1"
 kotlinxSerializationJson = "1.7.3"
 ksp = "2.1.0-1.0.29"
 lint = "31.7.3"