Fix publishTo setting for snapshot releases.
Fix publishTo setting for snapshot releases.

I failed to update this setting in the last PR.

MasseGuillaume/scalameta,scalameta/scalameta,MasseGuillaume/scalameta,scalameta/scalameta,scalameta/scalameta,olafurpg/scalameta,MasseGuillaume/scalameta,olafurpg/scalameta,xeno-by/scalameta,scalameta/scalameta,xeno-by/scalameta,olafurpg/scalameta,xeno-by/scalameta,scalameta/scalameta