[Android] Updated manifest version number

src/android/AndroidManifest.xml

@@ -2,7 +2,7 @@
 <manifest package="net.sf.nootka"
           xmlns:android="http://schemas.android.com/apk/res/android"
           android:versionName="1.7.3-beta3"
-          android:versionCode="45"
+          android:versionCode="47"
           android:installLocation="auto">
     <application android:hardwareAccelerated="true"
                  android:name="org.qtproject.qt5.android.bindings.QtApplication"