[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

kotlin-native/klib/build.gradle

@@ -44,7 +44,7 @@ dependencies {
     implementation project(":kotlin-stdlib")
     implementation project(path: ':kotlin-native:backend.native', configuration: 'cli_bcApiElements')
     implementation project(":kotlin-native:utilities:basic-utils")
-    testImplementation RepoDependencies.commonDependency(project, "junit")
+    testImplementation libs.junit4
     testImplementation project(":kotlin-test:kotlin-test-junit")
 }