Make dagger version explicit.

Things built with 1.2.1 compiler won't run with the runtime library
from 1.2.0, so we need to ensure releases remain consistent.

Change-Id: Ie69349814cfce4c0d229be4372ce7210211a0497
Reviewed-on: http://gerrit.dmdirc.com/3229
Reviewed-by: Greg Holmes <greg@dmdirc.com>
Automatic-Compile: DMDirc Build Manager
Update submodules: plugins (new commits)

plugins:
    f01ef8c Chris Smith <chris@dmdirc.com>
            Make dagger version explicit.

            Things built with 1.2.1 compiler won't run with the runtime library
            from 1.2.0, so we need to ensure releases remain consistent.

            Gerrit: http://gerrit.dmdirc.com/3230

Change-Id: I3931053ffb8fc9eb42ff1f31183824e2bdf957f6