[Build] Move JUnit dependencies into the version catalog

The `kotlin-test` dependencies are left untouched as changing them affects publications, thus these versions are independent from the used inside our build
#KTI-1349 In Progress

js/js.tests/build.gradle.kts

@@ -54,7 +54,7 @@ dependencies {
     testApi(project(":js:js.dce"))
     testApi(project(":js:js.engines"))
     testApi(project(":compiler:incremental-compilation-impl"))
-    testApi(commonDependency("junit:junit"))
+    testApi(libs.junit4)
     testApi(projectTests(":kotlin-build-common"))
     testApi(projectTests(":generators:test-generator"))
 
@@ -79,7 +79,7 @@ dependencies {
     antLauncherJar(commonDependency("org.apache.ant", "ant"))
     antLauncherJar(toolsJar())
 
-    testRuntimeOnly("org.junit.vintage:junit-vintage-engine:${commonDependencyVersion("org.junit", "junit-bom")}")
+    testRuntimeOnly(libs.junit.vintage.engine)
 
     testImplementation(commonDependency("org.jetbrains.kotlinx", "kotlinx-serialization-json"))
     testImplementation(libs.ktor.client.cio)