serendipity_event_social: Update bundled shariff to 3.0.1

This version uses locally hosted webfonts. In order to save space
and bandwith, we'll only bundle .ttf, woff and .woff2. That means
no support for legacy iOS (.svg) or IE < 9 (.eot).

References s9y/Serendipity#553

serendipity_event_social/serendipity_event_social.php

@@ -16,7 +16,7 @@ class serendipity_event_social extends serendipity_event {
         $propbag->add('description',   PLUGIN_EVENT_SOCIAL_DESC);
         $propbag->add('stackable',     false);
         $propbag->add('author',        'onli, Matthias Mees, Thomas Hochstein');
-        $propbag->add('version',       '0.12.2');
+        $propbag->add('version',       '0.13.0');
         $propbag->add('requirements',  array(
             'serendipity' => '2.0'
         ));