[Build] Pin api and language level to 1.8 in Kotlin compiler modules used by KGP

This is required to be able to compile KGP and it's dependencies which
set LV to 1.4 when repo will use LV 1.9. This caused by the change how
enums are compiled (KT-48872).

compiler/daemon/daemon-client/build.gradle.kts

@@ -1,3 +1,6 @@
+import org.jetbrains.kotlin.gradle.dsl.KotlinVersion
+import org.jetbrains.kotlin.gradle.tasks.KotlinCompilationTask
+
 description = "Kotlin Daemon Client"
 
 plugins {
@@ -35,11 +38,14 @@ dependencies {
     }
 }
 
-tasks.withType<org.jetbrains.kotlin.gradle.dsl.KotlinCompile<*>> {
-    kotlinOptions {
+tasks.withType<KotlinCompilationTask<*>> {
+    compilerOptions {
         // This module is being run from within Gradle, older versions of which only have older kotlin-stdlib in the runtime classpath.
-        apiVersion = "1.4"
-        freeCompilerArgs += "-Xsuppress-version-warnings"
+        @Suppress("DEPRECATION")
+        apiVersion.set(KotlinVersion.KOTLIN_1_4)
+        @Suppress("DEPRECATION")
+        languageVersion.set(KotlinVersion.KOTLIN_1_4)
+        freeCompilerArgs.add("-Xsuppress-version-warnings")
     }
 }