Update submodules: plugins (new commits)

plugins:
    c2d3e32 Greg Holmes <greg@dmdirc.com>
            Remove some deprecation warnings

            Gerrit: http://gerrit.dmdirc.com/3215

Change-Id: I0439808e37e61e107740c1ee7b3d72238d048343
Update submodules: plugins (new commits)

plugins:
    203f3a1 Greg Holmes <greg@dmdirc.com>
            DI the OS X integration plugin.

            Gerrit: http://gerrit.dmdirc.com/3217

Change-Id: Ib96f95a389056b85fe6fa44b2bf048bd51fda618