upgrade to gradle 8.8

upgrade kotlin to 1.9
updated to use java 17
updated to target sdk 34
version bump

app/build.gradle

@@ -1,25 +1,29 @@
 apply plugin: 'com.android.application'
 apply plugin: 'kotlin-android'
-apply plugin: 'kotlin-android-extensions'
 
 tasks.withType(org.jetbrains.kotlin.gradle.tasks.KotlinCompile).all {
-    kotlinOptions.jvmTarget = "1.8"
+    kotlinOptions.jvmTarget = JavaVersion.VERSION_17.toString()
 }
 
 repositories {
     maven { url "https://jitpack.io" }
 }
 
 android {
-    compileSdkVersion 31
+    compileSdkVersion 34
     defaultConfig {
         applicationId "com.bitcoin.merchant.app"
         minSdkVersion 21
-        targetSdkVersion 31
-        versionCode 50317
-        versionName "5.3.17"
+        targetSdkVersion 34
+        versionCode 50400
+        versionName "5.4.0"
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
     }
+
+    buildFeatures {
+        buildConfig = true
+    }
+
     buildTypes {
         release {
             minifyEnabled true
@@ -31,9 +35,10 @@ android {
         }
     }
     android {
+        namespace "com.bitcoin.merchant.app"
         compileOptions {
-            sourceCompatibility 1.8
-            targetCompatibility 1.8
+            sourceCompatibility JavaVersion.VERSION_17
+            targetCompatibility JavaVersion.VERSION_17
         }
         lintOptions {
             checkReleaseBuilds false

build.gradle

@@ -6,9 +6,9 @@ buildscript {
         jcenter()
         maven { url "https://jitpack.io" }
     }
-    ext.kotlin_version = '1.3.70'
+    ext.kotlin_version = '1.9.21'
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.6.1'
+        classpath 'com.android.tools.build:gradle:8.1.4'
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
     }
 }

gradle/wrapper/gradle-wrapper.properties

@@ -3,4 +3,4 @@ distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-5.6.4-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.0-bin.zip