[JS] Define Node.js version in one place and use a single version everywhere

Consequently, it fixes the inability to run some JS related tests on Apple devices with ARM.

libraries/tools/kotlin-test-js-runner/build.gradle.kts

@@ -13,7 +13,7 @@ val default = configurations.getByName(Dependency.DEFAULT_CONFIGURATION)
 default.extendsFrom(configurations.publishedRuntime.get())
 
 node {
-    version.set("16.2.0")
+    version.set(nodejsVersion)
     download.set(true)
     nodeProjectDir.set(projectDir)
 }