Fixed release flipper stub.

Updates dependency versions.

app/src/release/java/com/majinnaibu/monstercards/init/FlipperInitializer.java

@@ -1,10 +1,17 @@
 package com.majinnaibu.monstercards.init;
 
 import android.content.Context;
+import android.os.Bundle;
 
+import androidx.navigation.NavController;
+import androidx.navigation.NavDestination;
+
+@SuppressWarnings("unused")
 public class FlipperInitializer {
 
-    public static void init(Context ctx) {}
+    public static void init(Context ctx) {
+    }
 
     public static void sendNavigationEvent(NavController controller, NavDestination destination, Bundle arguments) {
-}
+    }
+}