Update submodules: plugins (new commits)

plugins:
    136fc81 Greg Holmes <greg@dmdirc.com>
            Fix, probably, buggy ActionTableModel.

            Gerrit: http://gerrit.dmdirc.com/3930

Change-Id: I1bb0deeea15c8ee022ac1d6c37481498be7f5e08

modules/plugins

@@ -1 +1 @@
-Subproject commit 8cc0bc6854148650780e0057a8f32b663b91edfb
+Subproject commit 136fc81d2e8a623853c00e13db96ec4ab72f4181