Update submodules: plugins (new commits)

plugins:
    07b1502 Greg Holmes <greg@dmdirc.com>
            Synchronize on something more sensible.

            Gerrit: http://gerrit.dmdirc.com/3978

Change-Id: I061d640ce5f2fb71116e898c3515ba325845cfd7
Update submodules: plugins (new commits)

plugins:
    3fdfa52 Greg Holmes <greg@dmdirc.com>
            Fix an unguarded read in ErrorTableModel.

            Gerrit: http://gerrit.dmdirc.com/3979

Change-Id: I4b7f521cf4b0d4511791e2280e3e1885a71d02a6