Set sourceCompatibility and targetCompatibility for JavaCompile tasks

Currently running build with JAVA_HOME pointing to
any JDK != 1.8 results in errors like

    #KT-30382 Fixed

build.gradle.kts

@@ -733,6 +733,8 @@ fun jdkPath(version: String): String {
 fun Project.configureJvmProject(javaHome: String, javaVersion: String) {
     tasks.withType<JavaCompile> {
         if (name != "compileJava9Java") {
+            sourceCompatibility = javaVersion
+            targetCompatibility = javaVersion
             options.isFork = true
             options.forkOptions.javaHome = file(javaHome)
             options.compilerArgs.add("-proc:none")