🦀 [enhancement] - Remove Hardcoded Passwords (e.g. nexus/sonatype)

[eformat]

📝 Description

It would be nice to remove all hard coded passwords in the tech exercises (nexus, sonatype) are partially done.

So that the flow is consistent e.g.

🧙‍♀️ Suggested solution

• Create a SealedSecret
• Mount this in pipelines and other places as required (which use parameters now)

Affects the flow of the docs so is probably medium effort.

[eformat]

We could also consider using the External Secrets Operator -> Gitlab Variables adapter .. this seems to work OK as a mechanism as well