Update PassAndroid to 3.3.1 (331)

metadata/org.ligi.passandroid.txt

@@ -301,6 +301,13 @@ Build:3.3.0,330
     gradle=noMaps,noAnalytics,forFDroid
     prebuild=sed -i -e '/play-services/d' -e '/android-sdk-manager/d' build.gradle
 
+Build:3.3.1,331
+    commit=3.3.1
+    subdir=android
+    init=sed -i -e '/buildToolsVersion/s/25.0.1/25.0.0/' build.gradle
+    gradle=noMaps,noAnalytics,forFDroid
+    prebuild=sed -i -e '/play-services/d' -e '/android-sdk-manager/d' build.gradle
+
 Maintainer Notes:
 TODO: Build zxing-core-2.3.0-SNAPSHOT.jar from source.
 * https://github.com/zxing/zxing