Bump target and compile SDK to 33

Signed-off-by: Andy Scherzinger <info@andy-scherzinger.de>

app/build.gradle

@@ -36,14 +36,14 @@ apply plugin: "org.jlleitschuh.gradle.ktlint"
 apply plugin: 'kotlinx-serialization'
 
 android {
-    compileSdkVersion 32
+    compileSdkVersion 33
     buildToolsVersion '33.0.2'
 
     namespace 'com.nextcloud.talk'
 
     defaultConfig {
         minSdkVersion 24
-        targetSdkVersion 31
+        targetSdkVersion 33
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
 
         // mayor.minor.hotfix.increment (for increment: 01-50=Alpha / 51-89=RC / 90-99=stable)

app/src/main/java/com/nextcloud/talk/messagesearch/MessageSearchActivity.kt

@@ -220,12 +220,12 @@ class MessageSearchActivity : BaseActivity() {
         searchView = menuItem.actionView as SearchView
         setupSearchView()
         menuItem.setOnActionExpandListener(object : MenuItem.OnActionExpandListener {
-            override fun onMenuItemActionExpand(item: MenuItem?): Boolean {
+            override fun onMenuItemActionExpand(item: MenuItem): Boolean {
                 searchView.requestFocus()
                 return true
             }
 
-            override fun onMenuItemActionCollapse(item: MenuItem?): Boolean {
+            override fun onMenuItemActionCollapse(item: MenuItem): Boolean {
                 onBackPressed()
                 return false
             }