Update androidGradlePlugin to v8.13.1

Author: renovate[bot]

gradle/libs.versions.toml

@@ -6,7 +6,7 @@ compose-multiplatform = "1.8.2"
 composeUiTooling = "1.5.4"
 coroutines = "1.10.2"
 kotlinxSerialization = "1.9.0"
-androidGradlePlugin = "8.12.2"
+androidGradlePlugin = "8.13.1"
 koin = "4.1.1"
 koin-annotations = "2.2.0"
 ktor = "3.2.3"