Add missing exported flag

plugin.xml

@@ -91,7 +91,7 @@
                 android:name="de.appplant.cordova.plugin.notification.ClearReceiver"
                 android:exported="false" />
 
-            <receiver android:name="de.appplant.cordova.plugin.localnotification.RestoreReceiver" >
+            <receiver android:name="de.appplant.cordova.plugin.localnotification.RestoreReceiver" android:exported="false" >
                 <intent-filter>
                     <action android:name="android.intent.action.BOOT_COMPLETED" />
                 </intent-filter>