Migrate to Kotlin 2.3.20

Author: landomen

app/build.gradle

@@ -605,6 +605,9 @@ dependencies {
 
     // Dagger
     kapt Google.dagger.compiler
+    // Dagger 2.57+ reads Kotlin @Metadata via an external kotlin-metadata-jvm; pin it to the
+    // project Kotlin version so it understands 2.3 metadata (keep in sync with version.kotlin).
+    kapt "org.jetbrains.kotlin:kotlin-metadata-jvm:2.3.20"
     implementation Google.dagger
 
     // Glide

build.gradle

@@ -280,8 +280,8 @@ if (diFramework == 'Metro') {
                 afterEvaluate {
                     tasks.withType(org.jetbrains.kotlin.gradle.tasks.KotlinCompile).configureEach {
                         compilerOptions {
-                            languageVersion.set(org.jetbrains.kotlin.gradle.dsl.KotlinVersion.KOTLIN_2_2)
-                            apiVersion.set(org.jetbrains.kotlin.gradle.dsl.KotlinVersion.KOTLIN_2_2)
+                            languageVersion.set(org.jetbrains.kotlin.gradle.dsl.KotlinVersion.KOTLIN_2_3)
+                            apiVersion.set(org.jetbrains.kotlin.gradle.dsl.KotlinVersion.KOTLIN_2_3)
                         }
                         // Remove Anvil from the compiler plugin classpath so it can't
                         // override language version or run its K1 compiler plugin

duckchat/duckchat-impl/src/main/java/com/duckduckgo/duckchat/impl/inputscreen/ui/viewmodel/InputScreenViewModel.kt

@@ -331,7 +331,7 @@ class InputScreenViewModel @AssistedInject constructor(
     val inputFieldCommand: Flow<InputFieldCommand> = _inputFieldCommand.receiveAsFlow()
 
     init {
-        combine(
+        combine<Any, Unit>(
             voiceServiceAvailable,
             voiceInputAllowed,
             isSearchModeFlow,