Disable shrinkResources to fix F-Droid's reproducible build

For more information see https://f-droid.org/docs/Reproducible_Builds/#resource-shrinker

app/build.gradle

@@ -50,7 +50,7 @@ android {
         // TODO: update Gradle version
         release {
             minifyEnabled true
-            shrinkResources true
+            shrinkResources false // disabled to fix F-Droid's reproducible build
             proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
             archivesBaseName = 'app'
         }