Use nexus for lombok to get edge version

Change-Id: I8373fbf3997be18149828fc8c191119e522226b5
Reviewed-on: http://gerrit.dmdirc.com/2801
Automatic-Compile: DMDirc Build Manager
Reviewed-by: Chris Smith <chris@dmdirc.com>
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