Bump kotlin, SDK, NDK and gradle versions

Author: rolandgeider

android/app/build.gradle

@@ -23,8 +23,8 @@ if (keystorePropertiesFile.exists()) {
 
 android {
     namespace = "de.wger.flutter"
-    compileSdkVersion 35
-    ndkVersion "27.0.12077973"
+    compileSdkVersion 36
+    ndkVersion "28.2.13676358"
 
     compileOptions {
         sourceCompatibility JavaVersion.VERSION_11
@@ -39,9 +39,7 @@ android {
     defaultConfig {
         // Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
         applicationId "de.wger.flutter"
-        // NOTE: manually setting the minSdk to 23 instead of "flutter.minSdkVersion"
-        //       because flutter_zxing requires a higher minSdkVersion.
-        minSdk = 23
+        minSdkVersion = flutter.minSdkVersion
         targetSdk = flutter.targetSdkVersion
         versionCode = flutter.versionCode
         versionName = flutter.versionName

android/gradle/wrapper/gradle-wrapper.properties

@@ -2,4 +2,4 @@ distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-8.4-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.7-all.zip

android/settings.gradle

@@ -18,8 +18,8 @@ pluginManagement {
 
 plugins {
     id "dev.flutter.flutter-plugin-loader" version "1.0.0"
-    id "com.android.application" version "8.3.2" apply false
-    id "org.jetbrains.kotlin.android" version "2.0.20" apply false
+    id "com.android.application" version "8.6.0" apply false
+    id "org.jetbrains.kotlin.android" version "2.1.20" apply false
 }
 
 include ":app"