Update Infrastructure to `v2`

> [!NOTE]
> Since we are now versioning our Infrastructure, we will now consider updates to `build-cd` that require an update to model deployment repositories such as this one, a major (i.e. `vX.0`) update.

Updates to the `ci.yml` that allow the `!redeploy` comment command. See https://github.com/ACCESS-NRI/build-cd/pull/176. 