Update targetSdk to 29.

app/build.gradle

@@ -92,8 +92,8 @@ def abiPostFix = ['universal'   : 0,
 
 android {
     flavorDimensions "none"
-    compileSdkVersion 28
-    buildToolsVersion '28.0.3'
+    compileSdkVersion 29
+    buildToolsVersion '29.0.3'
     useLibrary 'org.apache.http.legacy'
 
     dexOptions {
@@ -114,7 +114,7 @@ android {
         versionName canonicalVersionName
 
         minSdkVersion 19
-        targetSdkVersion 28
+        targetSdkVersion 29
         multiDexEnabled true
 
         vectorDrawables.useSupportLibrary = true

reproducible-builds/Dockerfile

@@ -11,8 +11,8 @@ RUN apt-get update -y && apt-get install -y $(cat docker/dependencies.txt)
 RUN docker/print-versions.sh docker/dependencies.txt
 
 ENV ANDROID_SDK_FILENAME        android-sdk_r24.4.1-linux.tgz
-ENV ANDROID_API_LEVELS          android-28
-ENV ANDROID_BUILD_TOOLS_VERSION 28.0.3
+ENV ANDROID_API_LEVELS          android-29
+ENV ANDROID_BUILD_TOOLS_VERSION 29.0.3
 
 ENV ANDROID_HOME /usr/local/android-sdk-linux
 ENV PATH         ${PATH}:${ANDROID_HOME}/tools:${ANDROID_HOME}/platform-tools