Test tasks depends on skiko resources

This, of course, measn that we should keep it somewhere else, not in
core, but for not it's sufficient

web/core/build.gradle.kts

@@ -19,6 +19,10 @@ val copySkikoResources = tasks.register("copySkikoResources", Copy::class) {
     destinationDir = file("${project.buildDir}/skiko")
 }
 
+tasks.withType<org.jetbrains.kotlin.gradle.targets.js.testing.KotlinJsTest>().configureEach {
+    dependsOn(copySkikoResources)
+}
+
 kotlin {
     jvm()
     js(IR) {