Race condition in the alloy upgrade job helper

Motivation

There is a probable race condition in the alloy upgrade job helper. In certain situations, the lookup can occur before the flux helm controller has had a chance to post back a status to the HelmRelease CR. This can result in a situation where templating fails by trying to index a field that is nil.

pipeline link here

Acceptance Criteria

• Edge cases where no helmrelease history is available should fail gracefully and assume no upgrade needs to take place.