Stage Firefly app url not printed in GitHub workflows

### Expected Behaviour

We should print out the url to the deployed Firefly app when the GitHub workflow completes.

### Actual Behaviour

Customer has deployed his app to stage through the OOTB github actions and monitored that the workflow in github finished successfully. But he's unable to see the url as the namespace is considered a github secret. (see screenshot for example)


### Reproduce Scenario (including but not limited to)

Use the Stage / Prod workflow to generate applications

#### Steps to Reproduce

#### Platform and Version

#### Sample Code that illustrates the problem

#### Logs taken while reproducing problem

Start with the Stage / Prod workflow generation described in the issue and inspect how the generated GitHub workflow reports completion. Reproduce a deployment and verify that the completed workflow prints the deployed Firefly app URL rather than hiding the namespace.

Written by the indexing model from the issue text.