fix: Error if KeycloakClient secret is deleted before it

[zmotso]

Pull Request Template

Description

Moved the deletion process of the KeycloakClient before any logic that requires client secrets.
This will help avoid errors if the KeycloakClient secret is removed before it and the deletion process gets stuck.

Fixes #62

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality not to work as expected)

How Has This Been Tested?

Manually.

Checklist:

• I have performed a self-review of my code
• I have commented on my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Pull Request contains one commit. I squash my commits