Fix peerauthentication having incorrect selectorLabels

Kiali is throwing an error: peerauth is using a bad match label selector within the file: https://repo1.dso.mil/big-bang/product/packages/minio/-/blob/main/chart/templates/bigbang/peer-authentication.yaml

Solution

Replace

{{- include "minio.labels" . | nindent 6 }}

with

{{- include "minio-operator.selectorLabels" . | nindent 6 }}