[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

plugins/jvm-abi-gen/build.gradle.kts

@@ -40,7 +40,7 @@ dependencies {
     compileOnly(intellijCore())
     compileOnly(commonDependency("org.jetbrains.intellij.deps:asm-all"))
 
-    testImplementation(commonDependency("junit:junit"))
+    testImplementation(libs.junit4)
     testImplementation(projectTests(":compiler:tests-common"))
     testImplementation(projectTests(":compiler:incremental-compilation-impl"))
 }