Add compute.backendServices.list to the list of permissions required for workload identity sa

[arya-harness]

Hi Team

I am getting a

ERROR	Reconciler error	{"controller": "service", "controllerGroup": "", "controllerKind": "Service", "Service": {"name":"******","namespace":"*******"}, "namespace": "******", "name": "********r", "reconcileID": "cf4d3868-3fea-4e22-9c63-939feac01985", "error": "googleapi: Error 403: Required 'compute.backendServices.list' permission for 'projects/*********', forbidden"}
sigs.k8s.io/controller-runtime/pkg/internal/controller.(*Controller).reconcileHandler
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/internal/controller/controller.go:324
sigs.k8s.io/controller-runtime/pkg/internal/controller.(*Controller).processNextWorkItem
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/internal/controller/controller.go:265
sigs.k8s.io/controller-runtime/pkg/internal/controller.(*Controller).Start.func2.2
	/go/pkg/mod/sigs.k8s.io/[email protected]/pkg/internal/controller/controller.go:226

Seems to be benign here mostly but unsure if it is actually needed. Version: v1.0.0

A suggestion from my end would be to update the script here if its needed.

Thanks