Update submodules: plugins (new commits)

plugins:
    e2b1419 Greg Holmes <greg@dmdirc.com>
            EventBus logging for DCC plugin

            Gerrit: http://gerrit.dmdirc.com/3665

Change-Id: I81dd87665c8f757eb250f342eb000390edf7aa38

modules/plugins

@@ -1 +1 @@
-Subproject commit ac1c0178fc40286c50c58c6b96886697e850071f
+Subproject commit e2b1419602b9599aead1fe5168d850b54ea358b5