fix: SSH key syntax

[vvalderrv]

Update syntax to enable resolution

[Copilot]

Pull Request Overview

Updates SSH key configuration syntax in Jenkins values files to enable proper resolution of 1Password secret references by wrapping them in variable expansion syntax.

• Removes deprecated sshKeysCredentialsId configuration from amazonEC2 cloud settings
• Updates privateKey values to use ${...} syntax for proper variable expansion of 1Password references

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
staging/values.yaml	Removes sshKeysCredentialsId and updates privateKey syntax with variable expansion
production/values.yaml	Removes sshKeysCredentialsId and updates privateKey syntax with variable expansion

---

_{Tip: Customize your code reviews with copilot-instructions.md. Create the file or learn how to get started.}