Update submodules: plugins (new commits)

plugins:
    c6809c3 Greg Holmes <greg@dmdirc.com>
            Use nexus for lombok to get edge version

            Gerrit: http://gerrit.dmdirc.com/2802

Change-Id: I1f983e5e46532a493269a935b59289746d6bd59f

modules/plugins

-Subproject commit 1b5f8b0a38da40f9f51aee03ceb551022da638ec
+Subproject commit c6809c3a331a59f1ac1bc46107927b1d605021da