feat: update target platform to Android 11

.travis.yml

@@ -33,12 +33,6 @@ matrix:
       language: android
       env: JOB=TEST
       if: NOT tag IS present
-      android:
-        components:
-          - build-tools-28.0.3
-          - android-28
-          - build-tools-29.0.3
-          - android-29
       script:
         - flutter pub get
         - flutter test
@@ -79,8 +73,8 @@ matrix:
         components:
           - build-tools-28.0.3
           - android-28
-          - build-tools-29.0.3
-          - android-29
+      before_script:
+        - yes | sdkmanager "platforms;android-30"
       script:
         - flutter build apk --target-platform android-arm
     - os: osx
@@ -103,10 +97,9 @@ matrix:
         components:
           - build-tools-28.0.3
           - android-28
-          - build-tools-29.0.3
-          - android-29
       install:
         - bundle install --gemfile=android/Gemfile
+        - yes | sdkmanager "platforms;android-30"
       script:
         - flutter clean
         - flutter build appbundle

android/app/build.gradle

@@ -30,7 +30,7 @@ def keystoreProperties = new Properties()
 keystoreProperties.load(new FileInputStream(keystorePropertiesFile))
 
 android {
-    compileSdkVersion 29
+    compileSdkVersion 30
 
     sourceSets {
         main.java.srcDirs += 'src/main/kotlin'
@@ -44,7 +44,7 @@ android {
         // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
         applicationId "com.cephalon.navis"
         minSdkVersion 16
-        targetSdkVersion 29
+        targetSdkVersion 30
         versionCode flutterVersionCode.toInteger()
         versionName flutterVersionName
     }
@@ -72,7 +72,6 @@ android {
         sourceCompatibility "1.8"
         targetCompatibility "1.8"
     }
-    buildToolsVersion '29.0.3'
 }
 
 flutter {

android/build.gradle

@@ -1,5 +1,5 @@
 buildscript {
-    ext.kotlin_version = '1.3.72'
+    ext.kotlin_version = '1.4.10'
     repositories {
         google()
         jcenter()