Update Kotlin targets to 1.9

Update Kotlin target of savedstate and projects that depend on it to 1.9.

Bug: 374102924
Test: existing tests still pass
Change-Id: I442310ec57f7db381c16f95985a952deb9af57b2
diff --git a/lifecycle/lifecycle-viewmodel-compose/build.gradle b/lifecycle/lifecycle-viewmodel-compose/build.gradle
index b99d1b3..a70993c 100644
--- a/lifecycle/lifecycle-viewmodel-compose/build.gradle
+++ b/lifecycle/lifecycle-viewmodel-compose/build.gradle
@@ -21,6 +21,8 @@
  * Please use that script when creating a new project, rather than copying an existing project and
  * modifying its settings.
  */
+
+import androidx.build.KotlinTarget
 import androidx.build.LibraryType
 import androidx.build.PlatformIdentifier
 
@@ -101,6 +103,7 @@
     legacyDisableKotlinStrictApiMode = true
     metalavaK2UastEnabled = false
     samples(project(":lifecycle:lifecycle-viewmodel-compose:lifecycle-viewmodel-compose-samples"))
+    kotlinTarget = KotlinTarget.KOTLIN_1_9
 }
 
 android {