Build: Use runtimeOnly instead of deprecated runtime

maven-publish plugin uses `runtimeOnly` for runtime scope instead of
`runtime`

plugins/kotlin-serialization/kotlin-serialization-compiler/build.gradle.kts

@@ -18,7 +18,7 @@ dependencies {
     compileOnly(project(":js:js.translator"))
     compileOnly(project(":kotlin-util-klib-metadata"))
 
-    runtime(kotlinStdlib())
+    runtimeOnly(kotlinStdlib())
 
     testCompile(projectTests(":compiler:tests-common"))
     testCompile(commonDep("junit:junit"))