[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/scripting/scripting-compiler-impl/build.gradle.kts

@@ -32,7 +32,7 @@ dependencies {
     testApi(project(":compiler:cli-common"))
     testApi(project(":compiler:frontend.java"))
     testApi(projectTests(":compiler:tests-common"))
-    testApi(commonDependency("junit:junit"))
+    testApi(libs.junit4)
 }
 
 sourceSets {

plugins/scripting/scripting-compiler/build.gradle.kts

@@ -32,7 +32,7 @@ dependencies {
     testApi(project(":compiler:cli-common"))
     testApi(project(":compiler:frontend.java"))
     testApi(projectTests(":compiler:tests-common"))
-    testApi(commonDependency("junit:junit"))
+    testApi(libs.junit4)
 
     testImplementation(intellijCore())
     testImplementation(commonDependency("org.jetbrains.kotlinx", "kotlinx-coroutines-core"))

plugins/scripting/scripting-ide-services-test/build.gradle.kts

@@ -19,7 +19,7 @@ val embeddableTestRuntime by configurations.creating {
 }
 
 dependencies {
-    allTestsRuntime(commonDependency("junit"))
+    allTestsRuntime(libs.junit4)
     testApi(kotlinStdlib("jdk8"))
     testApi(project(":kotlin-scripting-ide-services-unshaded"))
     testApi(project(":kotlin-scripting-compiler"))