Update plugin kotlin-multiplatform to v2.1.0

Author: juul-mobile-bot

gradle/libs.versions.toml

@@ -14,7 +14,7 @@ nserrorkt = { module = "com.rickclephas.kmp:nserror-kt", version = "0.2.0" }
 [plugins]
 android-library = { id = "com.android.library", version = "8.7.2" }
 api = { id = "org.jetbrains.kotlinx.binary-compatibility-validator", version = "0.16.3" }
-kotlin-multiplatform = { id = "org.jetbrains.kotlin.multiplatform", version = "2.0.21" }
+kotlin-multiplatform = { id = "org.jetbrains.kotlin.multiplatform", version = "2.1.0" }
 kotlinter = { id = "org.jmailen.kotlinter", version = "4.5.0" }
 maven-publish = { id = "com.vanniktech.maven.publish", version = "0.30.0" }
 swiftpackage = { id = "io.github.luca992.multiplatform-swiftpackage", version = "2.2.3" }