Do not configure replicas if autoscaling is enabled (#260)

Currently, if a ScaledObject is
[paused](https://keda.sh/docs/2.16/concepts/scaling-deployments/#pausing-autoscaling),
and the Helm release is updated, the deployment is scaled according to
replicaCount but KEDA is not re-pausing the deployment

charts/streams-app/templates/deployment.yaml

@@ -28,7 +28,9 @@ spec:
   serviceName: {{ template "streams-app.name" . }}
   podManagementPolicy: Parallel
   {{- end }}
+  {{- if (not .Values.autoscaling.enabled) }}
   replicas: {{ .Values.replicaCount }}
+  {{- end }}
   selector:
     matchLabels:
       app: {{ template "streams-app.name" . }}