Separate windows worker on concourse prod CI

[xtremerui]

What challenge are you facing?

Currently concourse prod ci is using same windows worker for running both dev and releasing tasks. If the concourse dev version advanced e.g from 4.2.2 to 5.0.0, the dependencies on the windows worker also got updated eg golang 1.14.2 to 1.14.4.

However if there is an issue of 4.2.2 and a patch release is needed, one would have to manually revert the dependencies back for running releasing tasks of 4.2.2 again, which could potentially block the dev work of 5.0.0 and slow down the releasing of the patch.

What would make this better?

A separate windows worker that holds the dependencies of 4.2 (or last released version)