Upgrade toolchain to api/lv 1.4

libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/kotlin/org/jetbrains/kotlin/gradle/SimpleKotlinGradleIT.kt

@@ -67,7 +67,7 @@ class SimpleKotlinGradleIT : KGPBaseTest() {
     fun testLanguageVersion(gradleVersion: GradleVersion) {
         project("languageVersion", gradleVersion) {
             buildAndFail("build") {
-                assertOutputContains("'break' and 'continue' are not allowed in 'when' statements")
+                assertOutputContains("The feature \"definitely not null type parameters\" is only available since language version 1.6")
             }
         }
     }

libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/resources/testProject/languageVersion/build.gradle

@@ -9,7 +9,7 @@ repositories {
 
 compileKotlin {
     kotlinOptions {
-        languageVersion = "1.3"
-        apiVersion = "1.3"
+        languageVersion = "1.5"
+        apiVersion = "1.5"
     }
 }

libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/resources/testProject/languageVersion/src/main/kotlin/helloWorld.kt

@@ -1,7 +1 @@
-fun breakInWhen() {
-    while (true) {
-        when {
-            true -> break
-        }
-    }
-}
+fun <T> f(t: T): T!! = t!!

libraries/tools/kotlin-lombok/build.gradle.kts

@@ -27,8 +27,8 @@ runtimeJar(rewriteDefaultJarDepsToShadedCompiler())
 tasks {
     withType<KotlinCompile> {
 //        kotlinOptions.jdkHome = rootProject.extra["JDK_18"] as String
-        kotlinOptions.languageVersion = "1.3"
-        kotlinOptions.apiVersion = "1.3"
+        kotlinOptions.languageVersion = "1.4"
+        kotlinOptions.apiVersion = "1.4"
         kotlinOptions.freeCompilerArgs += listOf(
             "-Xskip-prerelease-check", "-Xsuppress-version-warnings"
         )

libraries/tools/kotlin-project-model/build.gradle.kts

@@ -18,8 +18,8 @@ pill {
 }
 
 kotlin.target.compilations.all {
-    kotlinOptions.languageVersion = "1.3"
-    kotlinOptions.apiVersion = "1.3"
+    kotlinOptions.languageVersion = "1.4"
+    kotlinOptions.apiVersion = "1.4"
     kotlinOptions.freeCompilerArgs += listOf("-Xskip-prerelease-check")
 }