Updated cluster_secret.go to support k8s 1.24

[Kuvesz]

Q	A
Bug fix?	yes
New feature?	no
API breaks?	no
Deprecations?	no
License	Apache 2.0

What's in this PR?

So when using cluster-registry I encountered an error where the IstioControlPlane had a message saying "could not find secret reference for sa" which is an error I encountered before and happens on K8S 1.24.

Why?

The reason why this happens is detailed here, the fix I did was taken straight from the cluster-registry controller repo here

Checklist

• [X] Implementation tested
• [X] Error handling code meets the guideline
• [X] Logging code meets the guideline

[CLAassistant]

All committers have signed the CLA.