internal/ci: use cue-lang/cuelang.org workflow_dispatch for tip
See https://cuelang.org/cl/557408 for the history on this change.
Signed-off-by: Paul Jolly <paul@myitcv.io>
Change-Id: I39b059e9827757c93ac60e243d1d347c965ced56
Reviewed-on: https://review.gerrithub.io/c/cue-lang/cue/+/557443
Unity-Result: CUE porcuepine <cue.porcuepine@gmail.com>
TryBot-Result: CUEcueckoo <cueckoo@cuelang.org>
Reviewed-by: Jonathan Matthews <github@hello.jonathanmatthews.com>
Reviewed-by: Daniel Martí <mvdan@mvdan.cc>