Prohibit JVM target 1.6

But still compile stdlib, reflect, kotlin.test and scripting runtimes
with JVM target 1.6 to simplify migration from Kotlin 1.6 to 1.7.

 #KT-45165 Fixed

libraries/scripting/dependencies/build.gradle.kts

@@ -10,6 +10,7 @@ dependencies {
     api(project(":kotlin-scripting-common"))
     testApi(commonDependency("junit"))
     testImplementation(commonDependency("org.jetbrains.kotlinx", "kotlinx-coroutines-core"))
+    kotlinCompilerClasspath(project(":libraries:tools:stdlib-compiler-classpath"))
 }
 
 sourceSets {