[Android] update SDK version, and appcompat version

Android/app/build.gradle

@@ -5,11 +5,11 @@ android {
     aaptOptions {
         noCompress "webp"
     }
-    compileSdkVersion 28
+    compileSdkVersion 29
     defaultConfig {
         applicationId "com.example.samplestickerapp"
         minSdkVersion 15
-        targetSdkVersion 28
+        targetSdkVersion 29
         versionCode 1
         versionName "1.0"
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
@@ -98,7 +98,7 @@ tasks.whenTaskAdded { task ->
 
 dependencies {
     implementation fileTree(include: ['*.jar'], dir: 'libs')
-    implementation 'androidx.appcompat:appcompat:1.0.2'
+    implementation 'androidx.appcompat:appcompat:1.1.0'
     implementation 'com.google.android.material:material:1.0.0'
     testImplementation 'junit:junit:4.12'
     androidTestImplementation 'androidx.test:runner:1.2.0'