fix(publish/halyard): Ensure docs are always unique (#1687)
fix(publish/halyard): Ensure docs are always unique (#1687)

Many Halyard stable publishes have failed because the docs don't supply
anything unique to be commited - adding the date ensures the process of
generating & publishing that docs commit won't fail for that reason.
duftler/spinnaker,ewiseblatt/spinnaker,duftler/spinnaker,ewiseblatt/spinnaker,skim1420/spinnaker,spinnaker/spinnaker,jtk54/spinnaker,skim1420/spinnaker,ewiseblatt/spinnaker,duftler/spinnaker,ewiseblatt/spinnaker,jtk54/spinnaker,jtk54/spinnaker,skim1420/spinnaker,spinnaker/spinnaker,spinnaker/spinnaker,duftler/spinnaker,spinnaker/spinnaker,skim1420/spinnaker