Update ndn-cxx to include TLV decoding fix

Change-Id: I4ae70ad0f7333a69e059dcc8f835eb9027ee1d23
Refs: #4174
diff --git a/app/build.gradle b/app/build.gradle
index b06138c..909fae0 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -10,8 +10,8 @@
         applicationId "net.named_data.nfd"
         minSdkVersion 15
         targetSdkVersion 19
-        versionCode 4003
-        versionName "0.2.3 (NFD 0.5.0)"
+        versionCode 4004
+        versionName "0.2.4 (NFD 0.5.0, ndn-cxx 0.5.0-11-g1cf4146e)"
     }
     compileOptions {
         sourceCompatibility JavaVersion.VERSION_1_7